PHOTON SCIENCE

Recent results (update: December 8, 2024):

top numbers in brackets = photon science related publication numbers as listed here 
bottom numbers in brackets include further FLASH machine related publications (statistics starting 2012), not listed here, but, e.g., in the DESY publication database.

Important for reporting: Publications marked with an asterisk are published in journals which are not included in the Thomson-Reuter (WOS) master journal list or Scopus journal list. Presently these are publications 181 & 201 (both 2013) and 435 & 436 (both 2023).

1.                                        Mahdi M. Bidhendi, Gesa Goetzke, Ivette J. Bermudez Macias, Rosen Ivanov, Evgeny A. Schneidmiller, Najmeh Mirian and Stefan Düsterer,
   Determination of the XUV Frequency Chirp at the Free-Electron Laser FLASH via THz Streaking and Electron Beam Diagnostics,
   Photonics 11,1153 (2024); https://doi.org/10.3390/photonics11121153

2. Sonu Kumar, Stefan Düsterer, Ulrike Frühling, Skirmantas Alisaukas, Giovanni Cirmi, Marie Kristin Czwalinna, Uwe Große-Wortmann, Nick Kschuev, Frederik Kuschewski, Tino Lang, Hannes Lindenblatt, Bastian Manschwetus, Severin Meister, Christina C. Papadopoulou, Christopher Passow, Juliane Rönsch-Schulenburg, Nora Schirmel, Sebastian Schulz, Florian Trost, Han Xu, Igor Litvinyuk, Robert Moshammer, Nikolay M. Kabachnik, Benjamin Erk, and Atia Tul-Noor,
   Xenon photoionization in the vicinity of 4d giant resonance and Cooper minimum using an XUV-NIR pump-probe experiment,
   Phys. Rev. A 110, 063104 (2024); https://doi.org/10.1103/PhysRevA.110.063104

3. Lukas Wenthaus, Nikolay M. Kabachnik, Mario Borgwardt, Steffen Palutke, Dmytro Kutnyakhov, Federico Pressacco, Markus Scholz, Dmitrii Potorochin, Nils Wind, Stefan Düsterer, Günter Brenner, Oliver Gessner, Serguei Molodtsov, Wolfgang Eberhardt, and Friedrich Roth,
   Insights into the laser-assisted photoelectric effect from solid-state surfaces,
   Phys. Rev. B 110, 235406 (2024); https://doi.org/10.1103/PhysRevB.110.235406

4. Stephen M. Durkan, Vincent Richardson, Andrew Forembski, Lazaros Varvarezos, Denis Cubaynes, Stefan Düsterer, Pavle Juranić, Wenbin Li, Mathias Richter, Kai Tiedtke, Michael Meyer, L. A. A. Nikolopoulos and John T. Costello,
   Multiphoton single and double ionization of neon in the EUV,
   J. Phys. B.: At. Mol. Opt. Phys. 58, 015601 (2025) published online December 5, 2024; https://doi.org/10.1088/1361-6455/ad4078

5. Esmerando Escoto, Federico Pressacco, Yujiao Jiang, Supriya Rajhans, Nikita Khodakovskiy, Ingmar Hartl, Marcus Seidel, Christoph M. Heyl, and Henrik Tünnermann,
   Improved temporal characteristics for post-compressed pulses via application-tailored nonlinear polarization ellipse rotation,
   Opt. Lett. 49, 6841-6844 (2024); https://doi.org/10.1364/OL.539646

6. Martin Aeschlimann, Jan Philipp Bange, Michael Bauer, Uwe Bovensiepen, Hans-Joachim Elmers, Thomas Fauster, Lukas Gierster, Ulrich Höfer, Rupert Huber, Andi Li, Xintong Li, Stefan Mathias, Karina Morgenstern, Hrvoje Petek, Marcel Reutzel, Kai Rossnagel, Gerd Schönhense, Markus Scholz, Benjamin Stadtmüller, Julia Stähler, Shijing Tan, Bing Wang, Zehua Wang, Martin Weinelt,
   Time-resolved photoelectron spectroscopy at surfaces,
   Surf. Sci. 753, 122631 (2025), published online November 1, 2024; https://doi.org/10.1016/j.susc.2024.122631

7. Thomas Schlathölter and Jean-Christophe Poully,
   Radiation-Induced Molecular Processes in DNA: A Perspective on Gas-Phase Interaction Studies,
   Chem. Eur. J. 30, e202400633 (2024); https://doi.org/10.1002/chem.202400633

8. M. Riepp, A. Philippi-Kobs, L. Müller, W. Roseker, R. Rysov, R. Frömter, K. Bagschik, M. Hennes, D. Gupta, S. Marotzke, M. Walther, S. Bajt, R. Pan, T. Golz, N. Stojanovic, C. Boeglin, and G. Grübel,
   Terahertz-driven coherent magnetization dynamics in labyrinth-type domain networks,
   Phys. Rev. B 110, 094405 (2024); https://doi.org/10.1103/PhysRevB.110.094405

9. Matthias Dreimann, Frank Wahlert, Sebastian Roling, Rolf Treusch, Elke Plönjes and Helmut Zacharias,
   Development and performance simulations of a soft X-ray and XUV split-and-delay unit at beamlines FL23/24 at FLASH2 for time-resolved two-color pump–probe experiments,
   J. Synchrotron Rad. 31, 1168-1178 (2024); https://doi.org/10.1107/S160057752400609X

10. Ester Livshits, Dror Bittner, Florian Trost, Severin Meister, Hannes Lindenblatt, Rolf Treusch, Krishnendu Gope, Thomas Pfeifer, Roi Baer, Robert Moshammer & Daniel Strasser,
    Symmetry-breaking dynamics of a photoionized carbon dioxide dimer,
    Nature Communications 15, 6322 (2024); https://doi.org/10.1038/s41467-024-50759-2

11. M. Sauppe, T. Bischoff, C. Bomme, C. Bostedt, A. Colombo, B. Erk, T. Feigl, L. Flückiger, T. Gorkhover, A. Heilrath, K. Kolatzki, Y. Kumagai, B. Langbehn, J. P. Mueller, C. Passow, D. Ramm, D. Rolles, D. Rompotis, J. Schäfer-Zimmermann, B. Senfftleben, R. Treusch, A. Ulmer, J. Zimbalski, T. Möller and D. Rupp,
    Double diffraction imaging of X-ray induced structural dynamics in single free nanoparticles,
    New J. Phys. 26, 073019 (2024); https://doi.org/10.1088/1367-2630/ad5d84

12. Diksha Garg, Pragya Chopra, Jason W. L. Lee, Denis S. Tikhonov, Sonu Kumar, Oender Akcaalan, Felix Allum, Rebecca Boll, Alexander A. Butler, Benjamin Erk, Eva Gougoula, Sébastien P. Gruet, Lanhai He, David Heathcote, Ellen Jones, Mehdi M. Kazemi, Jan Lahl, Alexander K. Lemmens, Zhihao Liu, Donatella Loru, Sylvain Maclot, Robert Mason, James Merrick, Erland Müller, Terry Mullins, Christina C. Papadopoulou,  Christopher Passow, Jasper Peschel, Marius Plach, Daniel Ramm, Patrick Robertson, Dimitrios Rompotis, Alcides Simao, Amanda L. Steber, Ayhan Tajalli, Atia Tul-Noor, Nidin Vadassery, Ivo S. Vinklárek, Simone Techert, Jochen Küpper, Anouk M. Rijs, Daniel Rolles, Mark Brouard, Sadia Bari, Per Eng-Johnsson, Claire Vallance, Michael Burt, Bastian Manschwetus and Melanie Schnell,
    Ultrafast dynamics of fluorene initiated by highly intense laser fields,
    Phys. Chem. Chem. Phys. 26, 20261-20272 (2024); https://doi.org/10.1039/D3CP05063G

13. Barbara Keitel, Jaromír Chalupský, Šimon Jelínek, Tomáš Burian, Siarhei Dziarzhytski, Věra Hájková, Libor Juha, Zuzana Kuglerová, Marion Kuhlmann, Klaus Mann, Mabel Ruiz-Lopez, Bernd Schäfer, Vojtěch Vozda, Thomas Wodzinski, Mikhail V. Yurkov, and Elke Plönjes,
    Comparison of wavefront sensing and ablation imprinting for FEL focus diagnostics at FLASH2,
    Opt. Express 32, 21532-21552 (2024); https://doi.org/10.1364/OE.527418

14. Nele Thielemann-Kühn, Tim Amrhein, Wibke Bronsch, Somnath Jana, Niko Pontius, Robin Y. Engel, Piter S. Miedema, Dominik Legut, Karel Carva, Unai Atxitia,  Benjamin E. van Kuiken, Martin Teichmann, Robert E. Carley, Laurent Mercadier, Alexander Yaroslavtsev, Giuseppe Mercurio, Loïc Le Guyader, Naman Agarwal, Rafael Gort, Andres Scherz, Siarhei Dziarzhytski, Günter Brenner, Federico Pressacco, Ru-Pan Wang, Jan O. Schunck, Mangalika Sinha, Martin Beye, Gheorghe S. Chiuzbăian, Peter M. Oppeneer, Martin Weinelt, Christian Schüßler-Langeheine,
    Optical control of 4f orbital state in rare-earth metals,
    Sci. Adv. 10, eadk9522 (2024); https://dx.doi.org/10.1126/sciadv.adk9522

15. Denny Puntel, Dmytro Kutnyakhov, Lukas Wenthaus, Markus Scholz, Nils O. Wind, Michael Heber, Günter Brenner, Genda Gu, Robert J. Cava, Wibke Bronsch, Federico Cilento, Fulvio Parmigiani & Federico Pressacco,
    Out-of-equilibrium charge redistribution in a copper-oxide based superconductor by time-resolved X-ray photoelectron spectroscopy,
    Sci. Rep. 14:8775 (2024); https://doi.org/10.1038/s41598-024-56440-4

16. K. Baev, K. Bagschik, R. Bartolini, M. Gühr, S. Klumpp, W. Leemans, A. R. Maier, A. Martinez de la Ossa, J. Osterhoff, H. Reichert, L. Schaper, S. Schreiber, C. G. Schroer, K. Schubert, P. Winkler, E. Weckert,
    X-Ray Science at DESY: Upgrade Programs for the User Facilities FLASH and PETRA III,
    Synchrotron Radiation News 37, 4-11 (2024); https://doi.org/10.1080/08940886.2024.2312048

17. Atia-Tul-Noor, Sonu Kumar, Nora Schirmel, Benjamin Erk, Bastian Manschwetus, Skirmantas Alisaukas, Markus Braune, Giovanni Cirmi, Marie Kristin Czwalinna, Ulrike Frühling, Uwe Grosse-Wortmann, Nick Kschuev, Frederik Kuschewski, Tino Lang, Hannes Lindenblatt, Igor Litvinyuk, Severin Meister, Robert Moshammer, Christina C. Papadopoulou, Christopher Passow, Juliane Roensch-Schulenburg, Florian Trost, Ingmar Hartl, Stefan Düsterer, and Sebastian Schulz,
    Sub-50 fs temporal resolution in an FEL-optical laser pump-probe experiment at FLASH2,
    Opt. Express 32, 6597-6608 (2024); https://doi.org/10.1364/OE.513714

18. Jörn Bonse and Klaus Sokolowski-Tinten,
    Probing Laser-Driven Structure Formation at Extreme Scales in Space and Time,
    Laser Photonics Rev. 18, 2300912 (2024); https://doi.org/10.1002/lpor.202300912

19. David Schwickert, Andreas Przystawik, Dian Diaman, Detlef Kip, Jon P. Marangos, and Tim Laarmann,
    Coupled Electron-Nuclear Dynamics Induced and Monitored with Femtosecond Soft X-ray Pulses in the Amino Acid Glycine,
    J Phys. Chem. A 128, 989-995 (2024); https://doi.org/10.1021/acs.jpca.3c06517

20. Denis S. Tikhonov, Diksha Garg and Melanie Schnell,
    Inverse Problems in Pump-Probe Spectroscopy,
    Photochem 4, 57-110 (2024); https://doi.org/10.3390/photochem4010005
    Special Issue "Feature Papers in Photochemistry II"

21. Vishal Shokeen, Michael Heber, Dmytro Kutnyakhov, Xiaocui Wang, Alexander Yaroslavtsev, Pablo Maldonado, Marco Berritta, Nils Wind, Lukas Wenthaus, Federico Pressacco, Chul-Hee Min, Matz Nissen, Sanjoy K. Mahatha, Siarhei Dziarzhytski, Peter M. Oppeneer, Kai Rossnagel, Hans-Joachim Elmers, Gerd Schönhense, Hermann A. Dürr,
    Real-time observation of non-equilibrium phonon-electron energy and angular momentum flow in laser-heated nickel,
    Sci. Adv. 10, eadj2407 (2024); https://doi.org/10.1126/sciadv.adj2407

22. Douglas Garratt, Mary Matthews, Jon Marangos,
    Toward ultrafast soft x-ray spectroscopy of organic photovoltaic devices,
    Struct. Dyn. 11, 010901 (2024); https://doi.org/10.1063/4.0000214

23. Dennis Mayer, Fabiano Lever, Markus Gühr,
    Time-resolved x-ray spectroscopy of nucleobases and their thionated analogs,
    Photochemistry and Photobiology 100, 275-290 (2024); https://doi.org/10.1111/php.13903

24. M.Beye,
    Ultrafast Spectroscopy in Solid Matter,
    in “Structural Dynamics with X-ray and Electron Scattering”, eds. K. Amini, A. Rouzée, and M. J. J. Vrakking, Royal Society of Chemistry, 2023, vol. 25, ch. 2, pp. 54-84 *; https://doi.org/10.1039/BK9781837671564-00054

25. M. Gühr,
    Ultrafast Molecular Spectroscopy in the Gas Phase,
    in “Structural Dynamics with X-ray and Electron Scattering”, eds. K. Amini, A. Rouzée, and M. J. J. Vrakking, Royal Society of Chemistry, 2023, vol. 25, ch. 1, pp. 1-53 *; https://doi.org/10.1039/BK9781837671564-00001

26. Alexander Magunia, Marc Rebholz, Elisa Appi, Christina C. Papadopoulou, Hannes Lindenblatt, Florian Trost, Severin Meister, Thomas Ding, Michael Straub, Gergana D. Borisova, Junhee Lee, Rui Jin, Alexander von der Dellen, Christian Kaiser, Markus Braune, Stefan Düsterer, Skirmantas Ališauskas, Tino Lang, Christoph Heyl, Bastian Manschwetus, Sören Grunewald, Ulrike Frühling, Ayhan Tajalli, Ammar Bin Wahid, Laura Silletti, Francesca Calegari, Philip Mosel, Uwe Morgner, Milutin Kovacev, Uwe Thumm, Ingmar Hartl, Rolf Treusch, Robert Moshammer, Christian Ott, Thomas Pfeifer,
    Time-resolving state-specific molecular dissociation with XUV broadband absorption spectroscopy­,
    Sci. Adv. 9, eadk1482 (2023); https://doi.org/10.1126/sciadv.adk1482

27. Josef Krása, Tomáš Burian,Věra Hájková, Jaromír Chalupský, Šimon Jelínek, Katěrina Frantálová, Michal Krupka, Zuzana Kuglerová, Sushil Kumar Singh, Vojtěch Vozda, Luděk Vyšín, Michal Šmíd, Pablo Perez-Martin, Marion Kuhlmann, Juan Pintor, Jakub Cikhardt, Matthias Dreimann, Dennis Eckermann, Felix Rosenthal, Sam M. Vinko, Alessandro Forte, Thomas Gawne, Thomas Campbell, Shenyuan Ren, YuanFeng Shi, Trevor Hutchinson, Oliver Humphries, Thomas Preston, Mikako Makita, Motoaki Nakatsutsumi, Xiayun Pan, Alexander Köhler, Marion Harmand, Sven Toleikis, Katerina Falk, and Libor Juha,
    Ion emission from warm dense matter produced by irradiation with a soft x-ray free-electron laser,
    Matter Radiat. Extremes 9, 016602 (2023); https://doi.org/10.1063/5.0157781

28. Nils Roth, Daniel A. Horke, Jannik Lübke, Amit K. Samanta, Armando D. Estillore, Lena Worbs, Nicolai Pohlman, Kartik Ayyer, Andrew Morgan, Holger Fleckenstein, Martin Domaracky, Benjamin Erk, Christopher Passow, Jonathan Correa, Oleksandr Yefanov, Anton Barty, Saša Bajt, Richard A. Kirian, Henry N. Chapman, and Jochen Küpper,
    New aerodynamic lens injector for single particle diffractive imaging,
    Nucl. Instrum. and Meth. A 1058, 168820 (2024); https://doi.org/10.1016/j.nima.2023.168820,
    published online Nov. 5, 2023

29. James Unwin, Felix Allum, Mathew Britton, Ian Gabalski, Hubertus Bromberger, Mark Brouard, Philip H. Bucksbaum, Taran Driver, Nagitha Ekanayake, Diksha Garg, Eva Gougoula, David Heathcote, Andrew J. Howard, Paul Hockett, David M. P. Holland, Sonu Kumar, Chow-shing Lam, Jason W. L. Lee, Joseph McManus, Jochen Mikosch, Dennis Milesevic, Russell S. Minns, Christina C. Papadopoulou, Christopher Passow, Weronika O. Razmus, Anja Röder, Arnaud Rouzée, Michael Schuurman, Alcides Simao, Albert Stolow, Atia-Tul-Noor, Claire Vallance, Tiffany Walmsley, Daniel Rolles, Benjamin Erk, Michael Burt & Ruaridh Forbes,
    X-ray induced Coulomb explosion imaging of transient excited-state structural rearrangements in CS₂,
    Commun. Phys. 6:309 (2023); https://doi.org/10.1038/s42005-023-01414-7

30. T. Walmsley, J. Unwin, F. Allum, S. Bari, R. Boll, K. Borne, M. Brouard, P. Bucksbaum, N. Ekanayake, B. Erk, R. Forbes, A. J. Howard, P. Eng-Johnsson, J. W. L. Lee, Z. Liu, B. Manschwetus, R. Mason, C. Passow, J. Peschel, D. Rivas, D. Rolles, A. Rörig, A. Rouzée, C. Vallance, F. Ziaee, and M. Burt,
    Characterizing the multi-dimensional reaction dynamics of dihalomethanes using XUV-induced Coulomb explosion imaging,
    J. Chem. Phys. 159, 144302 (2023); https://doi.org/10.1063/5.0172749

31. Ian Gabalski, Felix Allum, Issaka Seidu, Mathew Britton, Günter Brenner, Hubertus Bromberger, Mark Brouard, Philip H. Bucksbaum, Michael Burt, James P. Cryan, Taran Driver, Nagitha Ekanayake, Benjamin Erk, Diksha Garg, Eva Gougoula, David Heathcote, Paul Hockett, David M. P. Holland, Andrew J. Howard, Sonu Kumar, Jason W. L. Lee, Siqi Li, Joseph McManus, Jochen Mikosch, Dennis Milesevic, Russell S. Minns, Simon Neville, Atia-Tul-Noor, Christina C. Papadopoulou, Christopher Passow, Weronika O. Razmus, Anja Röder, Arnaud Rouzée, Alcides Simao, James Unwin, Claire Vallance, Tiffany Walmsley, Jun Wang, Daniel Rolles, Albert Stolow, Michael S. Schuurman, and Ruaridh Forbes,
    Time-Resolved X-ray Photoelectron Spectroscopy: Ultrafast Dynamics in CS₂ Probed at the S 2p Edge,
    J. Phys. Chem. Lett. 14, 7126−7133 (2023); https://doi.org/10.1021/acs.jpclett.3c01447

32. Kirsten Schnorr, Michal Belina, Sven Augustin, Hannes Lindenblatt, Yifan Liu, Severin Meister, Thomas Pfeifer, Georg Schmid, Rolf Treusch, Florian Trost, Petr Slavíček, Robert Moshammer,
    Direct tracking of ultrafast proton transfer in water dimers,
    Sci. Adv. 9, eadg7864 (2023); https://doi.org/10.1126/sciadv.adg7864

33. Dominik Hoeing, Robert Salzwedel, Lena Worbs, Yulong Zhuang, Amit K. Samanta, Jannik Lübke, Armando D. Estillore, Karol Dlugolecki, Christopher Passow, Benjamin Erk, Nagitha Ekanayake, Daniel Ramm, Jonathan Correa, Christina C. Papadopoulou, Atia Tul Noor, Florian Schulz, Malte Selig, Andreas Knorr, Kartik Ayyer, Jochen Küpper, and Holger Lange,
    Time-Resolved Single-Particle X‑ray Scattering Reveals Electron-Density Gradients As Coherent Plasmonic-Nanoparticle-Oscillation Source,
    Nano Lett. 23, 5943-5950 (2023); https://pubs.acs.org/doi/10.1021/acs.nanolett.3c00920

34. Evgeny Schneidmiller, Matthias Dreimann, Marion Kuhlmann, Juliane Rönsch-Schulenburg and Helmut Zacharias,
    Generation of Ultrashort Pulses in XUV and X-ray FELs via an Excessive Reverse Undulator Taper,
    Photonics 10, 653 (2023); https://doi.org/10.3390/photonics10060653

35. J. Chalupský, V. Vozda, J. Hering, J. Kybic, T. Burian, S. Dziarzhytski, K. Frantálová, V. Hájková, Š. Jelínek, L. Juha, B. Keitel, Z. Kuglerová, M. Kuhlmann, B. Petryshak, M. Ruiz-Lopez, L. Vyšín, T. Wodzinski, and E. Plönjes,
    Deep learning for laser beam imprinting,
    Opt. Express 31 19703-19721 (2023); https:/dx.doi.org/10.1364/OE.481776

36. Rosen Ivanov, Mahdi M. Bidhendi, Ivette J. Bermúdez Macias, Maciej Brachmanski, Svea Kreis, Susanne Bonfigt, Markus Degenhardt, Marie-Kristin Czwalinna, Mikhail Pergament, Martin Kellert, Franz X. Kärtner, and Stefan Düsterer,
    Free-electron laser temporal diagnostic beamline FL21 at FLASH,
    Opt. Express 31, 19146-19158 (2023); https://doi.org/10.1364/OE.492228

37. Enliang Wang, Nora G. Kling, Aaron C. LaForge, Razib Obaid, Shashank Pathak, Surjendu Bhattacharyya, Severin Meister, Florian Trost, Hannes Lindenblatt, Patrizia Schoch, Matthias Kübel, Thomas Pfeifer, Artem Rudenko, Sergio Díaz-Tendero, Fernando Martín, Robert Moshammer, Daniel Rolles, and Nora Berrah,
    Ultrafast Roaming Mechanisms in Ethanol Probed by Intense Extreme Ultraviolet Free-Electron Laser Radiation: Electron Transfer versus Proton Transfer,
    J. Phys. Chem. Lett. 14, 4372−4380 (2023); http://dx.doi.org/10.1021/acs.jpclett.2c03764

38. Klaus Sokolowski-Tinten, Jörn Bonse, Anton Barty, Henry N. Chapman, Saša Bajt, Mike J. Bogan, Sebastien Boutet, Andrea Cavalleri, Stefan Düsterer, Matthias Frank, Janos Hajdu, Stefan Hau-Riege, Stefano Marchesini, Nicola Stojanovic, & Rolf Treusch,
    In-Situ Observation of the Formation of Laser-Induced Periodic Surface Structures with Extreme Spatial and Temporal Resolution,
    in ”Ultrafast Laser Nanostructuring - The Pursuit of Extreme Scales” (R. Stoian, J.Bonse eds.)
    Springer Series in Optical Sciences 239, pp 257-276 (2023); https://doi.org/10.1007/978-3-031-14752-4_6

39. Jun Wang, Taran Driver, Felix Allum, Christina C. Papadopoulou, Christopher Passow, Günter Brenner, Siqi Li, Stefan Düsterer, Atia Tul Noor, Sonu Kumar, Philip H. Bucksbaum, Benjamin Erk, Ruaridh Forbes, James P. Cryan,
    Photon energy-resolved velocity map imaging from spectral domain ghost imaging,
    New J. Phys. 25, 033017 (2023); https://doi.org/10.1088/1367-2630/acc201

40. Matthias Dreimann, Frank Wahlert, Dennis Eckermann, Felix Rosenthal, Sebastian Roling, Tobias Reiker, Marion Kuhlmann, Sven Toleikis, Maciej Brachmanski, Rolf Treusch, Elke Plönjes, Björn Siemer and Helmut Zacharias,
    The soft X-ray and XUV split-and-delay unit at beamlines FL23/24 at FLASH2,
    J. Synchrotron Rad. 30, 479-489 (2023); https://doi.org/10.1107/S1600577523000395

41. Michael Wagstaffe, Adrian Dominguez-Castro, Lukas Wenthaus, Steffen Palutke, Dmytro Kutnyakhov, Michael Heber, Federico Pressacco, Siarhei Dziarzhytski, Helena Gleißner, Verena Kristin Gupta, Harald Redlin, Adriel Dominguez, Thomas Frauenheim, Angel Rubio, Andreas Stierle, and Heshmat Noei,
    Photoinduced Dynamics at the Water/TiO₂(101) Interface,
    Phys. Rev. Lett. 130, 108001 (2023); https://doi.org/10.1103/PhysRevLett.130.108001

42. Martin Beye, Markus Gühr, Ingmar Hartl, Elke Plönjes, Lucas Schaper, Siegfried Schreiber, Kai Tiedtke and Rolf Treusch,
    FLASH and the FLASH2020+ project - current status and upgrades for the free-electron laser in Hamburg at DESY,
    Eur. Phys. J. Plus 138, 193 (2023); https://doi.org/10.1140/epjp/s13360-023-03814-8

43. Alessandro Colombo, Simon Dold, Patrice Kolb, Nils Bernhardt, Patrick Behrens, Jonathan Correa, Stefan Düsterer, Benjamin Erk, Linos Hecht, Andrea Heilrath, Robert Irsig, Norman Iwe, Jakob Jordan, Björn Kruse, Bruno Langbehn, Bastian Manschwetus, Franklin Martinez, Karl-Heinz Meiwes-Broer, Kevin Oldenburg, Christopher Passow, Christian Peltz, Mario Sauppe, Fabian Seel, Rico Mayro P. Tanyag, Rolf Treusch, Anatoli Ulmer, Saida Walz, Thomas Fennel, Ingo Barke, Thomas Möller, Bernd von Issendorff, Daniela Rupp,
    Three-dimensional femtosecond snapshots of isolated faceted nanostructures,
    Sci. Adv. 9, eade5839 (2023); https://doi.org/10.1126/sciadv.ade5839

44. A.-L. Viotti, S. Alisauskas, M. Seidel, A. Tajalli, B. Manschwetus, H. Cankaya, K. Jurkus, V. Sinkus, and I. Hartl,
    FLASH free electron laser pump-probe laser concept based on spectral broadening of high-power ytterbium picosecond systems in multi-pass cells,
    Rev. Sci. Instrum. 94, 023002 (2023); https://doi.org/10.1063/5.0131717

45. Torben Reuss, Sreeju Sreekantan Nair Lalithambika, Christian David, Florian Döring, Christian Jooss, Marcel Risch, and Simone Techert,
    Advancements in Liquid Jet Technology and X-ray Spectroscopy for Understanding Energy Conversion Materials during Operation,
    Acc. Chem. Res. 56, 203–214 (2023); https://doi.org/10.1021/acs.accounts.2c00525

46. Evgeny Schneidmiller, Ivette J. Bermudez Macias, Martin Beye, Markus Braune, Marie Kristin Czwalinna, Stefan Düsterer, Bart Faatz, Rosen Ivanov, Ulf Fini Jastrow, Marion Kuhlmann, Juliane Rönsch-Schulenburg, Siegfried Schreiber, Andrey Sorokin, Kai Tiedtke, Mikhail Yurkov and Johann Zemella,
    Two-Color Operation of a Soft X-ray FEL with Alternation of Undulator Tunes,
    Appl. Sci. 13, 67 (2023); https://doi.org/10.3390/app13010067
    published online Dec. 21, 2022

47. Gregor Hartmann, Gesa Goetzke, Stefan Düsterer, Peter Feuer-Forson, Fabiano Lever, David Meier, Felix Möller, Luis Vera Ramirez, Markus Guehr, Kai Tiedtke, Jens Viefhaus & Markus Braune,
    Unsupervised real‑world knowledge extraction via disentangled variational autoencoders for photon diagnostics,
    Sci. Rep. 12, 20783 (2022); https://doi.org/10.1038/s41598-022-25249-4

48. Davide Curcio, Klara Volckaert, Dmytro Kutnyakhov, Steinn Ymir Agustsson, Kevin   Bühlmann, Federico Pressacco, Michael Heber, Siarhei Dziarzhytski, Yves Acremann, Jure Demsar, Wilfried Wurth, Charlotte E. Sanders, and Philip Hofmann,
    Tracking the surface atomic motion in a coherent phonon oscillation,
    Phys. Rev. B 106, L201409 (2022); https://doi.org/10.1103/PhysRevB.106.L201409

49. J. Correa, M. Mehrjoo, R. Battistelli, F. Lehmkühler, A. Marras, C. B. Wunderer, T. Hirono, V. Felk, F. Krivan, S. Lange, I. Shevyakov, V. Vardanyan, M. Zimmer, M. Hoesch, K. Bagschik, N. Guerrini, B. Marsh, I. Sedgwick, G. Cautero, L. Stebel, D. Giuressi, R. H. Menk, A. Greer, T. Nicholls, W. Nichols, U. Pedersen, P. Shikhaliev, N. Tartoni, H. J. Hyun, S. H. Kim, S. Y. Park, K. S. Kim, F. Orsini, F. J. Iguaz, F. Büttner, B. Pfau, E. Plönjes, K. Kharitonov, M. Ruiz-Lopez, R. Pan, S. Gang,  B. Keitel and H. Graafsma,
    The PERCIVAL detector: first user experiments,
    J. Synchrotron Rad. 30 (2023); https://doi.org/10.1107/S1600577522010347
    published online Nov. 2022

50. David Schwickert, Marco Ruberti, Přemysl Kolorenč, Andreas Przystawik, Slawomir Skruszewicz, Malte Sumfleth, Markus Braune, Lars Bocklage, Luis Carretero, Marie Kristin Czwalinna, Dian Diaman, Stefan Düsterer, Marion Kuhlmann, Steffen Palutke, Ralf Röhlsberger, Juliane Rönsch-Schulenburg, Sven Toleikis, Sergey Usenko, Jens Viefhaus, Anton Vorobiov, Michael Martins, Detlef Kip, Vitali Averbukh, Jon P. Marangos, and Tim Laarmann,
    Charge-induced chemical dynamics in glycine probed with time-resolved Auger electron spectroscopy,
    Struct. Dyn. 9, 064301 (2022); https://doi.org/10.1063/4.0000165

51. Michael Straub, Thomas Ding, Marc Rebholz, Gergana D. Borisova, Alexander Magunia, Hannes Lindenblatt, Severin Meister, Florian Trost, Yimeng Wang, Steffen Palutke, Markus Braune, Stefan Düsterer, Rolf Treusch, Chris H. Greene, Robert Moshammer, Thomas Pfeifer, and Christian Ott,
    Differential Measurement of Electron Ejection after Two-Photon Two-Electron Excitation of Helium,
    Phys. Rev. Lett. 129, 183204 (2022); https://doi.org/10.1103/PhysRevLett.129.183204

52. Daniel Rolles,
    Time-resolved experiments on gas-phase atoms and molecules with XUV and X-ray free-electron lasers,
    Advances in Physics: X 8, 2132182 (2023); https://doi.org/10.1080/23746149.2022.2132182 ,
    published online Oct. 13, 2022

53. Konstantin Kharitonov, Masoud Mehrjoo, Mabel Ruiz-Lopez, Barbara Keitel, Svea Kreis, Seung-gi Gang, Rui Pan, Alessandro Marras, Jonathan Correa, Cornelia B. Wunderer & Elke Plönjes,
    Single-shot ptychography at a soft X-ray free-electron Laser,
    Sci. Rep. 12, 14430 (2022); https://doi.org/10.1038/s41598-022-18605-x

54. Jason W. L. Lee, Denis S. Tikhonov, Felix Allum, Rebecca Boll, Pragya Chopra, Benjamin Erk, Sébastien Gruet, Lanhai He, David Heathcote, Mehdi M. Kazemi, Jan Lahl, Alexander K. Lemmens, Donatella Loru, Sylvain Maclot, Robert Mason, Erland Müller, Terry Mullins, Christopher Passow, Jasper Peschel, Daniel Ramm, Amanda L. Steber, Sadia Bari, Mark Brouard, Michael Burt, Jochen Küpper, Per Eng-Johnsson, Anouk M. Rijs, Daniel Rolles, Claire Vallance, Bastian Manschwetus and Melanie Schnell,
    The kinetic energy of PAH dication and trication dissociation determined by recoil-frame covariance map imaging,
    Phys. Chem. Chem. Phys. 24, 23096-23105 (2022); https://doi.org/10.1039/D2CP02252D

55. Mahdi M. Bidhendi, Ivette J. Bermudez Macias, Rosen Ivanov, Mikhail V. Yurkov and Stefan Düsterer,
    FEL Pulse Duration Evolution along Undulators at FLASH,
    Appl. Sci. 12, 7048 (2022); https://doi.org/10.3390/app12147048

56. S. Ringleb, M. Kiffer, N. Stallkamp, S. Kumar, J. Hofbrucker, B. Reich, B. Arndt, G. Brenner, M. Ruiz-Lopéz, S. Düsterer, M. Vogel, K. Tiedtke, W. Quint, Th. Stöhlker and G. G. Paulus,
    High-intensity laser experiments with highly charged ions in a Penning trap,
    Phys. Scr. 97, 084002 (2022); https://doi.org/10.1088/1402-4896/ac7a69

57. Mehdi Ravandeh, Masoud Mehrjoo, Konstantin Kharitonov, Jan Schäfer, Antje Quade, Bruno Honnorat, Mabel Ruiz-Lopez, Barbara Keitel, Svea Kreis, Rui Pan, Seung-gi Gang, Kristian Wende, and Elke Plönjes,
    X-ray Ptychographic Imaging and Spectroscopic Studies of Plasma-Treated Plastic Films,
    Polymers 14, 2528 (2022); https://doi.org/10.3390/polym14132528

58. Hubertus Bromberger, Christopher Passow, David Pennicard, Rebecca Boll, Jonathan Correa, Lanhai He, Melby Johny, Christina C. Papadopoulou, Atia Tul-Noor, Joss Wiese, Sebastian Trippel, Benjamin Erk and Jochen Küpper,
    Shot-by-shot 250 kHz 3D ion and MHz photoelectron imaging using Timepix3,
    J. Phys. B: At. Mol. Opt. Phys. 55, 144001 (2022); https://doi.org/10.1088/1361-6455/ac6b6b

59. Xiaocui Wang, Robin Y. Engel, Igor Vaskivskyi, Diego Turenne, Vishal Shokeen, Alexander Yaroslavtsev, Oscar Grånäs, Ronny Knut, Jan O. Schunck, Siarhei Dziarzhytski, Günter Brenner, Ru-Pan Wang, Marion Kuhlmann, Frederik Kuschewski, Wibke Bronsch, Christian Schüßler-Langeheine, Andriy Styervoyedov, Stuart S. P. Parkin, Fulvio Parmigiani, Olle Eriksson, Martin Beye, Hermann A. Dürr,
    Ultrafast manipulation of the NiO antiferromagnetic order via sub-gap optical excitation,
    Faraday Discussions 237, 300-316 (2022); https://doi.org/10.1039/D2FD00005A

60. David Schwickert, Marco Ruberti, Přemys Kolorenč, Sergey Usenko, Andreas Przystawik, Karolin Baev, Ivan Baev, Markus Braune, Lars Bocklage, Marie Kristin Czwalinna, Sascha Deinert, Stefan Düsterer, Andreas Hans, Gregor Hartmann, Christian Haunhorst, Marion Kuhlmann, Steffen Palutke, Ralf Röhlsberger, Juliane Rönsch-Schulenburg, Philipp Schmidt, Sven Toleikis, Jens Viefhaus, Michael Martins, André Knie, Detlef Kip, Vitali Averbukh, Jon P. Marangos, Tim Laarmann,
    Electronic quantum coherence in glycine molecules probed with ultrashort x-ray pulses in real time,
    Sci. Adv. 8, eabn6848 (2022); https://doi.org/10.1126/sciadv.abn6848

61. Horst Rottke, Robin Y. Engel, Daniel Schick, Jan O. Schunck, Piter S. Miedema, Martin C. Borchert, Marion Kuhlmann, Nagitha Ekanayake, Siarhei Dziarzhytski, Günter Brenner, Ulrich Eichmann, Clemens von Korff Schmising, Martin Beye, Stefan Eisebitt,
    Probing electron and hole colocalization by resonant four-wave mixing spectroscopy in the extreme ultraviolet,
    Sci. Adv. 8, eabn5127 (2022); https://doi.org/10.1126/sciadv.abn5127

62. Kiana Baumgärtner, Marvin Reuner, Christian Metzger, Dmytro Kutnyakhov, Michael Heber, Federico Pressacco, Chul-Hee Min, Thiago R. F. Peixoto, Mario Reiser, Chan Kim, Wei Lu, Roman Shayduk, Manuel Izquierdo, Günter Brenner, Friedrich Roth, Achim Schöll, Serguei Molodtsov, Wilfried Wurth, Friedrich Reinert, Anders Madsen, Daria Popova-Gorelova & Markus Scholz,
    Ultrafast orbital tomography of a pentacene film using time-resolved momentum microscopy at a FEL,
    Nature Communications 13, 2741 (2022); https://dx.doi.org/10.1038/s41467-022-30404-6

63. D. Garg, J. W. L. Lee, D. S. Tikhonov, P. Chopra, A. L. Steber, A. K. Lemmens, B. Erk, F. Allum, R. Boll, X. Cheng, S. Düsterer, S. Gruet, L. He, D. Heathcote, M. Johny, M. M. Kazemi, H. Köckert, J. Lahl, D. Loru, S. Maclot, R. Mason, E. Müller, T. Mullins, P. Olshin, C. Passow, J. Peschel, D. Ramm, D. Rompotis, S. Trippel, J. Wiese, F. Ziaee, S. Bari, M. Burt, J. Küpper, A. M. Rijs, D. Rolles, S. Techert, P. Eng-Johnsson, M. Brouard, C. Vallance, B. Manschwetus and M. Schnell,
    Fragmentation Dynamics of Fluorene Explored Using Ultrafast XUV-Vis Pump-Probe Spectroscopy,
    Front. Phys. 10, 880793 (2022); https://dx.doi.org/10.3389/fphy.2022.880793

64. Felix Allum, Valerija Music, Ludger Inhester, Rebecca Boll, Benjamin Erk, Philipp Schmidt, Thomas M. Baumann, Günter Brenner, Michael Burt, Philipp V. Demekhin, Simon Dörner, Arno Ehresmann , Andreas Galler, Patrik Grychtol, David Heathcote, Denis Kargin, Mats Larsson, Jason W. L. Lee, Zheng Li, Bastian Manschwetus, Lutz Marder, Robert Mason, Michael Meyer, Huda Otto, Christopher Passow, Rudolf Pietschnig, Daniel Ramm, Kaja Schubert, Lucas Schwob, Richard D. Thomas, Claire Vallance, Igor Vidanović, Clemens von Korff Schmising, René Wagner, Peter Walter, Vitali Zhaunerchyk, Daniel Rolles, Sadia Bari, Mark Brouard & Markus Ilchen,
    A localized view on molecular dissociation via electron-ion partial covariance,
    Commun. Chem. 5, 42 (2022); https://doi.org/10.1038/s42004-022-00656-w

65. Dennis Mayer, Fabiano Lever and Markus Gühr,
    Data analysis procedures for time-resolved x-ray photoelectron spectroscopy at a SASE free-electron-laser,
    J. Phys. B: At. Mol. Opt. Phys. 55, 054002 (2022); https://doi.org/10.1088/1361-6455/ac3c91

66. Anne-Lise Viotti, Marcus Seidel, Esmerando Escoto, Supriya Rajhans, Wim P. Leemans, Ingmar Hartl,  and Christoph M. Heyl,
    Multi-pass cells for post-compression of ultrashort laser pulses,
    Optica 9, 197-216 (2022); https://doi.org/10.1364/OPTICA.449225

67. Hansjochen Köckert, Jason W. L. Lee, Felix Allum, Kasra Amini, Sadia Bari, Cédric Bomme, Felix Brauße, Mark Brouard, Michael Burt, Barbara Cunha de Miranda, Stefan Düsterer, Per Eng-Johnsson, Benjamin Erk, Marie Géléoc, Romain Geneaux, Alexander S. Gentleman, Renaud Guillemin, Gildas Goldsztejn, David M. P. Holland, Iyas Ismail, Loïc Journel, Thomas Kierspel, Jochen Küpper, Jan Lahl, Stuart R. Mackenzie, Sylvain Maclot, Bastian Manschwetus, Andrey S. Mereshchenko, Terence Mullins, Pavel K. Olshin, Jérôme Palaudoux, Francis Penent, Maria Novella Piancastelli, Dimitrios Rompotis, Arnaud Rouzée, Thierry Ruchon, Artem Rudenko, Nora Schirmel, Marc Simon, Simone Techert, Oksana Travnikova, Sebastian Trippel, Claire Vallance, Enliang Wang, Joss Wiese, Farzaneh Ziaee, Tatiana Marchenko, Daniel Rolles, and Rebecca Boll,
    UV-induced dissociation of CH₂BrI probed by intense femtosecond XUV pulses,
    J. Phys. B: At. Mol. Opt. Phys. 55, 014001 (2022); https://doi.org/10.1088/1361-6455/ac489d

68. Gerd Schönhense and Hans-Joachim Elmers,
    Spin- and time-resolved photoelectron spectroscopy and diffraction studies using time-of-flight momentum microscopes,
    J. Vac. Sci. Technol. A 40, 020802 (2022); https://doi.org/10.1116/6.0001500

69. Lennart Aufleger, Patrick Friebel, Patrick Rupprecht, Alexander Magunia, Thomas Ding , Marc Rebholz , Maximilian Hartmann, Christian Ott and Thomas Pfeifer,
    Line-shape broadening of an autoionizing state in helium at high XUV intensity,
    New J. Phys. 24, 013014 (2022); https://doi.org/10.1088/1367-2630/ac3b2e

70. Xuan Liu, Emmanuelle Jal, Renaud Delaunay, Romain Jarrier, Gheorghe Sorin Chiuzbaian, Grégory Malinowski, Torsten Golz, Ekaterina Zapolnova, Rui Pan, Nikola Stojanovic, Jan Lüning, and Boris Vodungbo,
    Investigating Coherent Magnetization Control with Ultrashort THz Pulses,
    Appl.Sci. 12, 1323 (2022); https://doi.org/10.3390/app12031323

71. E. A. Schneidmiller,
    Application of a modified chirp-taper scheme for generation of attosecond pulses in extreme ultraviolet and soft x-ray free electron lasers,
    Phys. Rev. Accel. Beams 25, 010701 (2022); https://doi.org/10.1103/PhysRevAccelBeams.25.010701

72. Marcus Seidel, Federico Pressacco, Oender Akcaalan, Thomas Binhammer, John Darvill, Nagitha Ekanayake, Maik Frede, Uwe Grosse-Wortmann, Michael Heber, Christoph M. Heyl, Dmytro Kutnyakhov, Chen Li, Christian Mohr, Jost Müller, Oliver Puncken, Harald Redlin, Nora Schirmel, Sebastian Schulz, Angad Swiderski, Hamed Tavakol, Henrik Tünnermann, Caterina Vidoli, Lukas Wenthaus, Nils Wind, Lutz Winkelmann, Bastian Manschwetus, Ingmar Hartl,
    Ultrafast MHz-Rate Burst-Mode Pump–Probe Laser for the FLASH FEL Facility Based on Nonlinear Compression of ps-Level Pulses from an Yb-Amplifier Chain,
    Laser Photonics Rev. 16, 2100268 (2022); https://doi.org/10.1002/lpor.202100268

73. D. Mayer, F. Lever, D. Picconi, J. Metje, S. Alisauskas, F. Calegari, S. Düsterer, C. Ehlert, R. Feifel, M. Niebuhr, B. Manschwetus, M. Kuhlmann, T. Mazza, M. S. Robinson, R. J. Squibb, A. Trabattoni, M. Wallner, P. Saalfrank, T. J. A. Wolf and M. Gühr,
    Following excited-state chemical shifts in molecular ultrafast x-ray photoelectron spectroscopy,
    Nature Communications 13, 198 (2022); https://doi.org/10.1038/s41467-021-27908-y

74. Jan Troß, Shashank Pathak, Adam Summers, Dimitrios Rompotis, Benjamin Erk, Christopher Passow, Bastian Manschwetus, Rebecca Boll, Patrik Grychtol, Sadia Bari, Vinod Kumarappan, Anh-Thu Le, Cheng Jin, Carlos Trallero and Daniel Rolles,
    High harmonic generation in mixed XUV and NIR fields at a free-electron laser,
    J. Opt. 24, 025502 (2022), https://doi.org/10.1088/2040-8986/ac4318

75. E. Appi, C. C. Papadopoulou, J. L. Mapa, C. Jusko, P. Mosel, A. Schoenberg, J. Stock, T. Feigl, S. Ališauskas, T. Lang, C. M. Heyl, B. Manschwetus, M. Brachmanski, M. Braune, H. Lindenblatt, F. Trost, S. Meister, P. Schoch, A. Trabattoni, F. Calegari, R. Treusch, R. Moshammer, I. Hartl, U. Morgner, and M. Kovacev,
    Synchronized beamline at FLASH2 based on high-order harmonic generation for two-color dynamics studies,
    Rev. Sci. Instrum. 92, 123004 (2021); https://doi.org/10.1063/5.0063225

76. Marc Rebholz, Thomas Ding, Lennart Aufleger, Maximilian Hartmann, Kristina Meyer, Veit Stooß, Alexander Magunia, David Wachs, Paul Birk, Yonghao Mi, Gergana Dimitrova Borisova, Carina da Costa Castanheira, Patrick Rupprecht, Maia Magrakvelidze, Uwe Thumm, Sebastian Roling, Marco Butz, Helmut Zacharias, Stefan Düsterer, Rolf Treusch, Günter Brenner, Christian Ott, and Thomas Pfeifer,
    XUV-initiated dissociation dynamics of molecular oxygen (O₂),
    J. Phys. Chem. A 125, 10138−10143 (2021); https://doi.org/10.1021/acs.jpca.1c06033

77. I. J. Bermúdez Macias, I. P. Sazhina, R. Ivanov, S. Düsterer and N. M. Kabachnik,
    Time-dependent post-collision-interaction effects in THz-field-assisted Auger decay,
    Phys. Rev. A 104, 053102 (2021); https://doi.org/10.1103/PhysRevA.104.053102

78. Fabiano Lever, Dennis Mayer, Jan Metje, Skirmantas Alisauskas, Francesca Calegari, Stefan Düsterer, Raimund Feifel, Mario Niebuhr, Bastian Manschwetus, Marion Kuhlmann, Tommaso Mazza, Matthew Scott Robinson, Richard J. Squibb, Andrea Trabattoni, Måns Wallner, Thomas J. A. Wolf and Markus Gühr,
    Core-Level Spectroscopy of 2-Thiouracil at the Sulfur L₁ - and L_2,3 -Edges Utilizing a SASE Free-Electron Laser,
    Molecules 26, 6469 (2021); https://doi.org/10.3390/molecules26216469

79. J. W. L. Lee, D. S. Tikhonov, P. Chopra, S. Maclot, A. L. Steber, S. Gruet, F. Allum, R. Boll, X. Cheng, S. Düsterer, B. Erk, D. Garg, L. He, D. Heathcote, M. Johny, M. M. Kazemi, H. Köckert, J. Lahl, A. K. Lemmens, D. Loru, R. Mason, E. Müller, T. Mullins, P. Olshin, C. Passow, J. Peschel, D. Ramm, D. Rompotis, N. Schirmel, S. Trippel, J. Wiese, F. Ziaee, S. Bari, M. Burt, J. Küpper, A. M. Rijs, D. Rolles, S. Techert, P. Eng-Johnsson, M. Brouard, C. Vallance, B. Manschwetus, and M. Schnell,
    Time-resolved relaxation and fragmentation of polycyclic aromatic hydrocarbons investigated in the ultrafast XUV-IR regime,
    Nature Communications 12, 6107 (2021); https://doi.org/10.1038/s41467-021-26193-z

80. Lucas Schaper, Sven Ackermann, Enrico Allaria, Philipp Amstutz, Karolin Baev, Martin Beye, Christopher Gerth, Ingmar Hartl, Wolfgang Hillert, Katja Honkavaara, Mehdi Mohammad Kazemi, Tino Lang, Pardis Niknejadi, Fabian Pannek, Juliane Rönsch-Schulenburg, Dmitrii Samoilenko, Evgeny Schneidmiller, Siegfried Schreiber, Markus Tischer, Mathias Vogt, Mikhail Yurkov and Johann Zemella,
    Flexible and Coherent Soft X-ray Pulses at High Repetition Rate: Current Research and Perspectives,
    Appl. Sci. 11, 9729 (2021); https://doi.org/10.3390/app11209729

81. Davide Curcio, Sahar Pakdel, Klara Volckaert, Jill A. Miwa, Søren Ulstrup, Nicola Lanatà, Marco Bianchi, Dmytro Kutnyakhov, Federico Pressacco, Günter Brenner, Siarhei Dziarzhytski, Harald Redlin, Steinn Ymir Agustsson, Katerina Medjanik, Dmitry Vasilyev, Hans-Joachim Elmers, Gerd Schönhense, Christian Tusche, Ying-Jiun Chen, Florian Speck, Thomas Seyller, Kevin Bühlmann, Rafael Gort, Florian Diekmann, Kai Rossnagel, Yves Acremann, Jure Demsar, Wilfried Wurth, Daniel Lizzit, Luca Bignardi, Paolo Lacovig, Silvano Lizzit, Charlotte E. Sanders, and Philip Hofmann,
    Ultrafast electronic line width broadening in the C 1s core level of graphene,
    Phys. Rev. B 104, L161104 (2021); https://doi.org/10.1103/PhysRevB.104.L161104

82. Marek Wieland, Nikolay M. Kabachnik, Markus Drescher, Yunpei Deng, Yunieski Arbelo, Nikola Stojanovic, Bernd Steffen, Juliane Roensch-Schulenburg, Rasmus Ischebeck, Alexander Malyzhenkov, Eduard Prat, and Pavle Juranić,
    Deriving x-ray pulse duration from center-of-energy shifts in THz-streaked ionized electron spectra,
    Opt. Express 29, 32739-32754 (2021); https://doi.org/10.1364/OE.432761

83. Xuan Liu, Alaaeldine Merhe, Emmanuelle Jal, Renaud Delaunay, Romain Jarrier, Valentin Chardonnet, Marcel Hennes, Sorin G. Chiuzbaian, Katherine Légaré, Martin Hennecke, Ilie Radu, Clemens Von Korff Schmising, Sören Grunewald, Marion Kuhlmann, Jan Lüning, and Boris Vodungbo,
    Sub-15-fs X-ray pump and X-ray probe experiment for the study of ultrafast magnetization dynamics in ferromagnetic alloys,
    Opt. Express 29, 32388-32403 (2021); https://doi.org/10.1364/OE.430828

84. Anne-Lise Viotti, Skirmantas Alisauskas, Henrik Tünnermann, Esmerando Escoto, Marcus Seidel, Katharina Dudde, B. Manschwetus, Ingmar Hartl, and Christoph M. Heyl,
    Temporal pulse quality of a Yb:YAG burst-mode laser post-compressed in a multi-pass cell,
    Opt. Lett. 46, 4686-4689 (2021); https://doi.org/10.1364/OL.435073

85. Federico Pressacco, Davide Sangalli, Vojtěch Uhlíř, Dmytro Kutnyakhov, Jon Ander Arregi, Steinn Ymir Agustsson, Günter Brenner, Harald Redlin, Michael Heber, Dmitry Vasilyev, Jure Demsar, Gerd Schönhense, Matteo Gatti, Andrea Marini, Wilfried Wurth & Fausto Sirotti,
    Subpicosecond metamagnetic phase transition in FeRh driven by non-equilibrium electron dynamics,
    Nature Communications 12, 5088 (2021); https://doi.org/10.1038/s41467-021-25347-3

86. Z. Chen, X. Na, C. B. Curry, S. Liang, M. French, A. Descamps, D. P. DePonte, J. D. Koralek, J. B. Kim, S. Lebovitz, M. Nakatsutsumi, B. K. Ofori-Okai, R. Redmer, C. Roedel, M. Schörner, S. Skruszewicz, P. Sperling, S. Toleikis, M. Z. Mo, and S. H. Glenzer,
    Observation of a highly conductive warm dense state of water with ultrafast pump–probe free-electron-laser measurements,
    Matter and Radiation at Extremes 6, 054401 (2021); https://doi.org/10.1063/5.0043726

87. Viktoriia Savchenko, Faris Gel’mukhanov, Tim Laarmann, Sergey P. Polyutov, and Victor Kimberg,
    Dynamical phase shift in x-ray absorption and ionization spectra by two delayed x-ray laser fields,
    Phys. Rev. A 104, 013114 (2021); https://doi.org/10.1103/PhysRevA.104.013114

88. Severin Meister, Aaron Bondy, Kirsten Schnorr, Sven Augustin, Hannes Lindenblatt, Florian Trost, Xinhua Xie, Markus Braune, Bastian Manschwetus, Nora Schirmel, Harald Redlin, Nicolas Douguet, Thomas Pfeifer, Klaus Bartschat, and Robert Moshammer,
    Linear dichroism in few-photon ionization of laser-dressed helium,
    Eur. Phys. J. D 75, 205 (2021); https://doi.org/10.1140/epjd/s10053-021-00218-0

89. Marc Rebholz, Thomas Ding, Victor Despré, Lennart Aufleger, Maximilian Hartmann, Kristina Meyer, Veit Stooß, Alexander Magunia, David Wachs, Paul Birk, Yonghao Mi, Gergana Dimitrova Borisova, Carina da Costa Castanheira, Patrick Rupprecht, Georg Schmid, Kirsten Schnorr, Claus Dieter Schröter, Robert Moshammer, Zhi-Heng Loh, Andrew R. Attar, Stephen R. Leone, Thomas Gaumnitz, Hans Jakob Wörner, Sebastian Roling, Marco Butz, Helmut Zacharias, Stefan Düsterer, Rolf Treusch, Günter Brenner, Jonas Vester, Alexander I. Kuleff, Christian Ott, and Thomas Pfeifer,
    All-XUV Pump-Probe Transient Absorption Spectroscopy of the Structural Molecular Dynamics of Di-iodomethane,
    Phys. Rev. X 11, 031001 (2021); https://dx.doi.org/10.1103/PhysRevX.11.031001

90. Konstantin Kharitonov, Masoud Mehrjoo, Mabel Ruiz-Lopez, Barbara Keitel, Svea Kreis, Martin Seyrich, Mihai Pop, and Elke Plönjes,
    Flexible ptychography platform to expand the potential of imaging at free electron lasers,
    Opt. Express 29, 22345-22365 (2021); https://doi.org/10.1364/OE.426931

91. Valentin Chardonnet, Marcel Hennes, Romain Jarrier, Renaud Delaunay, Nicolas Jaouen, Marion Kuhlmann, Nagitha Ekanayake, Cyril Léveillé, Clemens von Korff Schmising, Daniel Schick, Kelvin Yao, Xuan Liu, Gheorghe S. Chiuzbăian, Jan Lüning, Boris Vodungbo, and Emmanuelle Jal,
    Toward ultrafast magnetic depth profiling using time-resolved x-ray resonant magnetic reflectivity,
    Struct. Dyn. 8, 034305 (2021); https://doi.org/10.1063/4.0000109

92. G. Schönhense, D. Kutnyakhov, F. Pressacco, M. Heber, N. Wind, S.Y. Agustsson, S. Babenkov, D. Vasilyev, O. Fedchenko, S. Chernov, L. Rettig, B. Schönhense, L. Wenthaus, G. Brenner, S. Dziarzhytski, S. Paluttke, S. Mahatha, N. Schirmel, H. Redlin, B. Manschwetus, I. Hartl, Yu. Matveyev, A. Gloskovskii, C. Schlueter, V. Shokeen, H. Duerr, T. Allison, M. Beye, K. Rossnagel, H.J. Elmers, and K. Medjanik,
    Suppression of the vacuum space-charge effect in fs-photoemission by a retarding electrostatic front lens,
    Rev. Sci. Instrum. 92, 053703 (2021); https://doi.org/10.1063/5.0046567

93. I.J. Bermúdez Macias, S. Düsterer, R. Ivanov, U. Frühling, and N. M. Kabachnik,
    Post-collision interaction effect in THz-assisted Auger decay of noble gas atoms,
    J. Phys. B: At. Mol. Opt. Phys. 54, 085601 (2021); https://doi.org/10.1088/1361-6455/abf154

94. Ivette J. Bermúdez Macias, Stefan Düsterer, Rosen Ivanov, Jia Liu, Günter Brenner, Juliane Rönsch-Schulenburg, Marie K. Czwalinna, and Mikhail V. Yurkov,
    Study of temporal, spectral, arrival time and energy fluctuations of SASE FEL pulses,
    Opt. Express 29, 10491-10508 (2021); https://doi.org/10.1364/OE.419977

95. Z. Chen, C.B. Curry, R. Zhang, F. Treffert, N. Stojanovic, S. Toleikis, R. Pan, M. Gauthier, E. Zapolnova, L.E. Seipp, A. Weinmann, M.Z. Mo, J.B. Kim, B.B.L. Witte, S. Bajt, S. Usenko, R. Soufli, T. Pardini, S. Hau-Riege, C. Burcklen, J. Schein, R. Redmer, Y.Y. Tsui, B.K. Ofori-Okai & S.H. Glenzer,
    Ultrafast multi-cycle terahertz measurements of the electrical  conductivity in strongly excited solids,
    Nature Communications 12, 1638 (2021); https://doi.org/10.1038/s41467-021-21756-6

96. Lazaros Varvarezos, Stefan Düsterer, Maksim D. Kiselev, Rebecca Boll, Cedric Bomme, Alberto De Fanis, Benjamin Erk, Christopher Passow, Sergei M. Burkov, Gregor Hartmann, Markus Ilchen, Per Johnsson, Thomas J. Kelly, Bastian Manschwetus, Tommaso Mazza, Michael Meyer, Dimitrios Rompotis, Oleg Zatsarinny, Elena V. Gryzlova, Alexei N. Grum-Grzhimailo and John T. Costello,
    Near-Threshold Two-Photon Double Ionization of Kr in the Vacuum Ultraviolet,
    Phys. Rev. A 103, 022832 (2021); https://doi.org/10.1103/PhysRevA.103.022832

97. Friedrich Roth, Mario Borgwardt, Lukas Wenthaus, Johannes Mahl, Steffen Palutke, Günter Brenner, Giuseppe Mercurio, Serguei Molodtsov, Wilfried Wurth, Oliver Gessner & Wolfgang Eberhardt,
    Direct observation of charge separation in an organic light harvesting system by femtosecond time-resolved XPS,
    Nature Communications 12, 1196 (2021); https://doi.org/10.1038/s41467-021-21454-3

98. Thomas Ding, Marc Rebholz, Lennart Aufleger, Maximilian Hartmann, Veit Stooß, Alexander Magunia, Paul Birk, Gergana Dimitrova Borisova, Carina da Costa Castanheira, Patrick Rupprecht, Yonghao Mi, Thomas Gaumnitz, Zhi-Heng Loh, Sebastian Roling, Marco Butz, Helmut Zacharias, Stefan Düsterer, Rolf Treusch, Christian Ott, and Thomas Pfeifer,
    XUV pump - XUV probe transient-absorption spectroscopy at FELs,
    Faraday Discuss. 228, 519-536 (2021); https://doi.org/10.1039/D0FD00107D

99. Robin Y. Engel, Maria Ekimova, Piter S. Miedema, Carlo Kleine, Jan Ludwig, Miguel Ochmann, Benjamin Grimm-Lebsanft, Rory Ma, Melissa Teubner, Siarhei Dziarzhytski, Günter Brenner, Marie Kristin Czwalinna, Benedikt Rösner, Tae Kyu Kim, Christian David, Sonja Herres-Pawlis, Michael Rübhausen, Erik T. J. Nibbering, Nils Huse, and Martin Beye,
    Shot noise limited soft x-ray absorption spectroscopy in solution at a SASE-FEL using a transmission grating beam splitter,
    Struct. Dyn. 8, 014303 (2021); https://doi.org/10.1063/4.0000049

100. Thomas Ding, Marc Rebholz, Lennart Aufleger, Maximilian Hartmann, Veit Stooß, Alexander Magunia, Paul Birk, Gergana Dimitrova Borisova, David Wachs, Carina da Costa Castanheira, Patrick Rupprecht, Yonghao Mi, Andrew R. Attar, Thomas Gaumnitz, Zhi-Heng Loh, Sebastian Roling, Marco Butz, Helmut Zacharias, Stefan Düsterer, Rolf Treusch, Arvid Eislage, Stefano M. Cavaletto, Christian Ott, and Thomas Pfeifer,
     Measuring the frequency chirp of extreme-ultraviolet free-electron laser pulses by transient absorption spectroscopy,
     Nature Communications 12, 643 (2021); http://dx.doi.org/10.1038/s41467-020-20846-1

101. Anne-Lise Viotti, Skirmantas Alisauskas, Ammar Bin Wahid, Prannay Balla, Nora Schirmel, Bastian Manschwetus, Ingmar Hartl and Christoph M. Heyl,
     60 fs, 1030 nm FEL pump–probe laser based on a multi-pass post-compressed Yb:YAG source,
     J. Synchrotron Rad. 28, 36-43 (2021); https://doi.org/10.1107/S1600577520015052

102. Yu-Chen Cheng, Bart Oostenrijk, Jan Lahl, Sylvain Maclot, Sven Augustin, Georg Schmid, Kirsten Schnorr, Severin Meister, Dimitrios Rompotis, Bastian Manschwetus, Harald Redlin, Cédric Bomme, Benjamin Erk, Daniel Rolles, Rebecca Boll, Pavel Olshin, Artem Rudenko, Michael Meyer, Per Johnsson, Robert Moshammer, and Mathieu Gisselbrecht,
     Imaging multiphoton ionization dynamics of CH₃I at a high repetition rate XUV Free-Electron Laser,
     J. Phys. B: At. Mol. Opt. Phys. 54, 014001 (2021), counted to 2021, though published online Dec. 18, 2020;  https://doi.org/10.1088/1361-6455/abc6bc

103. F. Lever, D. Mayer, D. Picconi, J. Metje, S. Alisauskas, F. Calegari, S. Düsterer, C. Ehlert, R. Feifel, M. Niebuhr, B. Manschwetus, M. Kuhlmann, T. Mazza, M. S. Robinson, R. Squibb, A. Trabattoni, M. Wallner, P. Saalfrank, T. J. A. Wolf and M. Gühr,
     Ultrafast dynamics of 2-thiouracil investigated by time-resolved Auger spectroscopy,
     J. Phys. B: At. Mol. Opt. Phys. 54, 014002 (2021), counted to 2020, published online Dec. 17, 2020; https://doi.org/10.1088/1361-6455/abc9cb

104. R. Patrick Xian, Yves Acremann, Steinn Y. Agustsson, Maciej Dendzik, Kevin Bühlmann, Davide Curcio, Dmytro Kutnyakhov, Frederico Pressacco, Michael Heber, Shuo Dong, Tommaso Pincelli, Jure Demsar, Wilfried Wurth, Philip Hofmann, Martin Wolf, Markus Scheidgen, Laurenz Rettig, Ralph Ernstorfer,
     An open-source, end-to-end workflow for multidimensional photoemission spectroscopy,
     Scientific Data 7, 442 (2020); https://doi.org/10.1038/s41597-020-00769-8

105. Severin Meister, Aaron Bondy, Kirsten Schnorr, Sven Augustin, Hannes Lindenblatt, Florian Trost, Xinhua Xie, Markus Braune, Rolf Treusch, Bastian Manschwetus, Nora Schirmel, Harald Redlin, Nicolas Douguet, Thomas Pfeifer, Klaus Bartschat, and Robert Moshammer,
     Photoelectron spectroscopy of laser-dressed atomic helium,
     Phys. Rev. A 102, 062809 (2020); https://doi.org/10.1103/PhysRevA.102.062809

106. Sergey Usenko,  David Schwickert, Andreas Przystawik, Karolin Baev, Ivan Baev, Markus Braune, Lars Bocklage, Marie Kristin Czwalinna, Sascha Deinert, Stefan Düsterer, Andreas Hans, Gregor Hartmann, Christian Haunhorst, Marion Kuhlmann, Steffen Palutke, Ralf Röhlsberger, Juliane Rönsch-Schulenburg, Philipp Schmidt, Slawomir Skruszewicz, Sven Toleikis, Jens Viefhaus, Michael Martins, André Knie, Detlef Kip and Tim Laarmann,
     Auger electron wave packet interferometry on extreme timescales with coherent soft x-rays,
     J. Phys. B: At. Mol. Opt. Phys. 53, 244008 (2020); https://doi.org/10.1088/1361-6455/abc661

107. M. Wagstaffe, L. Wenthaus, A. Dominguez-Castro, S. Chung, G. D. L. Semione, S. Palutke, G. Mercurio, S. Dziarzhytski, H. Redlin, N. Klemke, Y. Yang, T. Frauenheim, A. Dominguez, F. Kärtner, A. Rubio, W. Wurth, A. Stierle, H. Noei,
     Ultrafast Real-time Dynamics of CO Oxidation Over an Oxide Photocatalyst,
     ACS Catal. 10, 13650–13658 (2020); https://doi.org/10.1021/acscatal.0c04098

108. Mabel Ruiz-Lopez, Masoud Mehrjoo, Barbara Keitel, Elke Plönjes, Domenico Alj, Guillaume Dovillaire, Lu Li and Philippe Zeitoun,
     Wavefront Sensing for Evaluation of Extreme Ultraviolet Microscopy,
     Sensors 20, 6426 (2020); http://dx.doi.org/10.3390/s20226426

109. L. Aufleger, P. Friebel, P. Rupprecht, A. Magunia, T. Ding, M. Rebholz, M. Hartmann, V. Stooß, C. Ott and T. Pfeifer,
     Pulse length effects on autoionizing states under the influence of intense SASE XUV fields,
     J. Phys. B: At. Mol. Opt. Phys. 53, 234002 (2020); https://doi.org/10.1088/1361-6455/abbe2d

110. Jan Metje, Fabiano Lever, Dennis Mayer, Richard James Squibb, Matthew S. Robinson, Mario Niebuhr, Raimund Feifel, Stefan Düsterer, Markus Gühr,
     URSA-PQ: A Mobile and Flexible Pump-Probe Instrument for Gas Phase Samples at the FLASH Free Electron Laser,
     Appl. Sci. 10, 7882 (2020); http://dx.doi.org/10.3390/app10217882

111. Clemens von Korff Schmising , Felix Willems, Sangeeta Sharma, Kelvin Yao, Martin Borchert, Martin Hennecke, Daniel Schick, Ilie Radu, Christian Strüber, Dieter W. Engel, Vishal Shokeen, Jens Buck, Kai Bagschik, Jens Viefhaus, Gregor Hartmann, Bastian Manschwetus, Soeren Grunewald, Stefan Düsterer, Emmanuelle Jal, Boris Vodungbo, Jan Lüning and Stefan Eisebitt,
     Element-Specific Magnetization Dynamics of Complex Magnetic Systems Probed by Ultrafast Magneto-Optical Spectroscopy,
      Appl. Sci. 10, 7580 (2020); https://doi.org/10.3390/app10217580

112. Ruaridh Forbes, Felix Allum, Sadia Bari, Rebecca Boll, Kurtis Borne, Mark Brouard, Philip H. Bucksbaum, Nagitha Ekanayake, Benjamin Erk, Andrew J. Howard, Per Johnsson, Jason W. L. Lee, Bastian Manschwetus, Robert Mason, Christopher Passow, Jasper Peschel, Daniel E. Rivas, Aljoscha Rörig, Arnaud Rouzée, Claire Vallance, Farzaneh Ziaee, Daniel Rolles and Michael Burt,
     Time-resolved site-selective imaging of predissociation and charge transfer dynamics: the CH₃I B-band,
     J. Phys. B: At. Mol. Opt. Phys. 53, 224001 (2020); https://doi.org/10.1088/1361-6455/abb1fd 

113. Robin Y. Engel, Piter S. Miedema, Diego Turenne, Igor Vaskivskyi, Günter Brenner, Siarhei Dziarzhytski, Marion Kuhlmann, Jan O. Schunck, Florian Döring, Andriy Styervoyedov, Stuart S. P. Parkin, Christian David, Christian Schüßler-Langeheine, Hermann A. Dürr and Martin Beye,
     Parallel Broadband Femtosecond Reflection Spectroscopy at a Soft X-Ray Free-Electron Laser ,
     Appl. Sci. 10, 6947 (2020); http://dx.doi.org/10.3390/app10196947

114. S. Dziarzhytski, M. Biednov, B. Dicke, A. Wang, P. S. Miedema, R. Y. Engel, J. O. Schunck, H. Redlin, H. Weigelt, F. Siewert, C. Behrens, M. Sinha, A. Schulte, B. Grimm-Lebsanft, S. G. Chiuzbăian, W. Wurth, M. Beye, M. Rübhausen, and G. Brenner,
     The TRIXS end-station for femtosecond time-resolved resonant inelastic x-ray scattering experiments at the soft x-ray free-electron laser FLASH,
     Struct. Dyn. 7, 054301 (2020); https://doi.org/10.1063/4.0000029

115. Alexander Magunia, Lennart Aufleger, Thomas Ding, Patrick Rupprecht, Marc Rebholz, Christian Ott and Thomas Pfeifer,
     Bound-State Electron Dynamics Driven by Near-Resonantly Detuned Intense and Ultrashort
     Pulsed XUV Fields,
     Appl. Sci. 10, 6153 (2020); https://doi.org/10.3390/app10186153

116. Maciej Dendzik, R. Patrick Xian, Enrico Perfetto, Davide Sangalli, Dmytro Kutnyakhov, Shuo Dong, Samuel Beaulieu, Tommaso Pincelli, Federico Pressacco, Davide Curcio, Steinn Ymir Agustsson, Michael Heber, Jasper Hauer, Wilfried Wurth, Günter Brenner, Yves Acremann, Philip Hofmann, Martin Wolf, Andrea Marini, Gianluca Stefanucci, Laurenz Rettig, and Ralph Ernstorfer,
     Observation of an Excitonic Mott Transition Through Ultrafast Core-cum-Conduction Photoemission Spectroscopy,
                         Phys. Rev. Lett. 125, 096401 (2020); https://doi.org/10.1103/PhysRevLett.125.096401

117. V. Vozda, T. Burian, V. Hájková, L. Juha, H. Enkisch, B. Faatz, M. Hermann, I. Jacyna, M. Jurek, B. Keitel, D. Klinger, R. Loch, E. Louis, I.A. Makhotkin, E. Plönjes, K. Saksl, F. Siewert, R. Sobierajski, S. Strobel, K. Tiedtke, S. Toleikis, G. de Vries, Z. Zelinger, and J. Chalupský,
     Characterization of megahertz X-ray laser beams by multishot desorption imprints in PMMA,
     Opt. Express 28, 25664 (2020); https://doi.org/10.1364/OE.396755

118. I. Milov, V. Zhakhovsky, D. Ilnitsky, K. Migdal, V. Khokhlov, Yu. Petrov, N. Inogamov, V. Lipp, N. Medvedev, B. Ziaja, V. Medvedev, I. A. Makhotkin, E. Louis, F. Bijkerk,
     Two-level ablation and damage morphology of Ru films under femtosecond extreme UV irradiation,
     Appl. Surf. Sci. 528, 146952 (2020); https://doi.org/10.1016/j.apsusc.2020.146952

119. Denis S. Tikhonov, Amlan Datta, Pragya Chopra, Amanda L. Steber, Bastian Manschwetus and Melanie Schnell,
     Approaching black-box calculations of pump-probe fragmentation dynamics of polyatomic molecules,
     Zeitschrift für Physikalische Chemie 234, 1507-1531 (2020); https://doi.org/10.1515/zpch-2020-0009

120. Rosen Ivanov, Ivette J. Bermúdez Macias, Jia Liu, Günter Brenner, Juliane Roensch-Schulenburg, Gabor Kurdi, Ulrike Frühling, Katharina Wenig, Sophie Walther, Anastasios Dimitriou, Markus Drescher, Irina P. Sazhina, Andrey K. Kazansky, Nikolai M. Kabachnik and Stefan Düsterer,
     Single-shot temporal characterization of XUV pulses with duration from ~10 fs to ~350 fs at FLASH,
     J. Phys. B.: At. Mol. Opt. Phys. 53, 184004 (2020); https://doi.org/10.1088/1361-6455/ab9c38

121. T. Wodzinski, M. Mehrjoo, M. Ruiz-Lopez, B. Keitel, M. Kuhlmann, M. Brachmanski, S. Künzel, M. Fajardo and E Plönjes,
     Single-shot transverse coherence measurements with Youngʼs double pinholes at FLASH2,
     J. Phys. Commun. 4, 075014 (2020); https://doi.org/10.1088/2399-6528/aba3b0

122. Tim Oelze, Olena Kulyk, Bernd Schütte, Ulrike Frühling, Eva Klimešová, Bartholomäus Jagielski, Laura Dittrich, Markus Drescher, Rui Pan, Nikola Stojanovic, Vitaly Polovinkin, Krishna P. Khakurel, Kerstin Muehlig, Ivette J. Bermudez Macias, Stefan Düsterer, Bart Faatz, Jakob Andreasson, Marek Wieland, and Maria Krikunova,
     THz streak camera performance for single-shot characterization of XUV pulses with complex temporal structures,
     Opt. Express 28, 20686-20703 (2020); https://doi.org/10.1364/OE.393547

123. Andrei Benediktovitch, Laurent Mercadier, Olivier Peyrusse, Andreas Przystawik, Tim Laarmann, Bruno Langbehn, Cédric Bomme, Benjamin Erk, Jonathan Correa, Caroline Mossé, Daniel Rolles, Sven Toleikis, Maximilian Bucher, Christoph F. O. Bostedt, Alvaro Sanchez-Gonzalez, Stepan Dobrodey, Michael A. Blessenohl, Alexander Nelde, Maria Müller, Daniela Rupp, Thomas Möller, José R. Crespo López-Urrutia, and Nina Rohringer,
     Amplified spontaneous emission in the extreme ultraviolet by expanding xenon clusters,
     Phys. Rev. A 101, 063412 (2020); https://doi.org/10.1103/PhysRevA.101.063412 

124. Daniela Rupp, Leonie Flückiger, Marcus Adolph, Alessandro Colombo, Tais Gorkhover, Marion Harmand, Maria Krikunova, Jan Philippe Müller, Tim Oelze, Yevheniy Ovcharenko, Maria Richter, Mario Sauppe, Sebastian Schorb, Rolf Treusch, David Wolter, Christoph Bostedt, and Thomas Möller,
     Imaging plasma formation in isolated nanoparticles with ultrafast resonant scattering,
     Structural Dynamics 7, 034303 (2020); https://doi.org/10.1063/4.0000006

125. Michael Wagstaffe, Heshmat Noei, and Andreas Stierle
     Elucidating the Defect-Induced Changes in the Photocatalytic Activity of TiO₂,
     J. Phys. Chem. C 124, 12539-12547 (2020); https://doi.org/10.1021/acs.jpcc.0c02809

126. S.M. Vinko, V. Vozda, J. Andreasson, S. Bajt, J. Bielecki, T. Burian, J. Chalupsky, O. Ciricosta, M. P. Desjarlais, H. Fleckenstein, J. Hajdu, V. Hajkova, P. Hollebon, L. Juha, M.F. Kasim, E.E. McBride, K. Muehlig, T. Preston, D. S. Rackstraw, S. Roling, S. Toleikis, J. S. Wark, and H. Zacharias,
     Time-resolved XUV Opacity Measurements of Warm-Dense Aluminium,
     Phys. Rev. Lett. 124, 225002 (2020); https://doi.org/10.1103/PhysRevLett.124.225002 

127. Severin Meister, Hannes Lindenblatt, Florian Trost, Kirsten Schnorr, Sven Augustin, Markus Braune, Rolf Treusch, Thomas Pfeifer and Robert Moshammer,
     Atomic, Molecular and Cluster Science with the Reaction Microscope Endstation at FLASH2,
     Appl. Sci. 10, 2953 (2020); https://doi.org/10.3390/app10082953

128. Elisa Appi, Christina C. Papadopoulou, Jose Louise Mapa, Nishad Wesavkar, Christoph Jusko, Philip Mosel, Skirmantas Ališauskas, Tino Lang, Christoph M. Heyl, Bastian Manschwetus, Maciej Brachmanski, Markus Braune, Hannes Lindenblatt, Florian Trost, Severin Meister, Patrizia Schoch, Rolf Treusch, Robert Moshammer, Ingmar Hartl, Uwe Morgner & Milutin Kovacev,
     A synchronized VUV light source based on high-order harmonic generation at FLASH,
     Sci. Rep. 10, 6867 (2020); https://doi.org/10.1038/s41598-020-63019-2
      

129. D. Kutnyakhov, R.P. Xian, M. Dendzik, M. Heber, F. Pressacco, S.Y.  Agustsson, L. Wenthaus, H. Meyer, S. Gieschen, G. Mercurio, A. Benz, K. Bühlman, S. Däster, R. Gort, D. Curcio, K. Volckaert, M. Bianchi, Ch. Sanders, J A. Miwa, S. Ulstrup, A. Oelsner, C. Tusche, Y.-J. Chen, D. Vasilyev, K. Medjanik, G. Brenner, S. Dziarzhytski, H. Redlin, B. Manschwetus, S. Dong, J. Hauer, L. Rettig, F. Diekmann, K. Rossnagel, J. Demsar, H.-J. Elmers, Ph. Hofmann, R. Ernstorfer, G. Schönhense, Y. Acremann, and W. Wurth,
     Time- and momentum-resolved photoemission studies using time-of-flight momentum microscopy at a free-electron laser,
     Rev. Sci. Instrum. 91, 013109 (2020); https://doi.org/10.1063/1.5118777
      
130. Young Yong Kim, Luca Gelisio, Giuseppe Mercurio, Siarhei Dziarzhytski, Martin Beye, Lars Bocklage, Anton Classen, Christian David, Oleg Yu. Gorobtsov, Ruslan Khubbutdinov, Sergey Lazarev, Nastasia Mukharamova, Yuri N. Obukhov, Benedikt Rösner, Kai Schlage, Ivan A. Zaluzhnyy, Günter Brenner, Ralf Röhlsberger, Joachim von Zanthier, Wilfried Wurth, and Ivan A. Vartanyants,
     Ghost imaging at an XUV free-electron laser,
     Phys. Rev. A 101, 013820 (2020); https://doi.org/10.1103/PhysRevA.101.013820
      
131. E. Zapolnova, R. Pan, T. Golz, M. Sindik, M. Nikolic, M. Temme, M. Rabasovic, D. Grujic, Z. Chen, S. Toleikis and N. Stojanovic,
     XUV-driven plasma switch for THz: new spatio-temporal overlap tool for XUV−THz pump−probe experiments at FELs,
     J. Synchrotron Rad. 27, 11-16 (2020); https://doi.org/10.1107/S1600577519014164
      
132. Kay Waltar, Johannes Haase, Rui Pan, Torsten Golz, Pavel Kliuiev, Michael Weinl, Matthias Schreck, Saša Bajt, Nikola Stojanovic, Jeroen A. van Bokhove, Matthias Hengsberger, Jürg Osterwalder, and Luca Castiglioni,
     Polarization-sensitive reconstruction of transient local THz fields at dielectric interfaces,
     Optica 6 1431-1436 (2019); https://doi.org/10.1364/OPTICA.6.001431
      
133. Christian Ott, Lennart Aufleger, Thomas Ding, Marc Rebholz, Alexander Magunia, Maximilian Hartmann, Veit Stooß, David Wachs, Paul Birk, Gergana D. Borisova, Kristina Meyer, Patrick Rupprecht, Carina da Costa Castanheira, Robert
     Moshammer, Andrew R. Attar, Thomas Gaumnitz, Zhi-Heng Loh, Stefan Düsterer, Rolf Treusch, Joachim Ullrich, Yuhai Jiang, Michael Meyer, Peter Lambropoulos, and Thomas Pfeifer,
     Strong-Field Extreme-Ultraviolet Dressing of Atomic Double Excitation,
     Phys. Rev. Lett. 123, 163201 (2019); https://doi.org/10.1103/PhysRevLett.123.163201
      
134. I. Milov, V. Lipp, D. Ilnitsky, N. Medvedev, K. Migdal, V. Zhakhovsky, V. Khokhlov, Yu. Petrov, N. Inogamov, S. Semin, A. Kimel, B. Ziaja, I. A. Makhotkin, E. Louis, F. Bijkerk,
     Similarity in ruthenium damage induced by photons with different energies: from visible light to hard X-rays,
     Appl. Surf. Sci. 501, 143973 (2020); https://doi.org/10.1016/j.apsusc.2019.143973
     published online Oct. 4, 2019
      
135. A. Meents and M.O. Wiedorn,
     Virus Structures by X-Ray Free-Electron Lasers,
     Annu. Rev. Virol. 6, 161-176 (2019); https://doi.org/10.1146/annurev-virology-092818-015724
      
136. Thomas Ding, Marc Rebholz, Lennart Aufleger, Maximilian Hartmann, Kristina Meyer, Veit Stooß, Alexander Magunia, David Wachs, Paul Birk, Yonghao Mi, Gergana Dimitrova Borisova, Carina da Costa Castanheira, Patrick Rupprecht, Zhi-Heng Loh, Andrew R. Attar, Thomas Gaumnitz, Sebastian Roling, Marco Butz, Helmut Zacharias, Stefan Düsterer, Rolf Treusch, Stefano M. Cavaletto, Christian Ott, and Thomas Pfeifer,
     Nonlinear Coherence Effects in Transient-Absorption Ion Spectroscopy with Stochastic Extreme-Ultraviolet Free-Electron Laser Pulses,
     Phys. Rev. Lett. 123, 103001 (2019); https://doi.org/10.1103/PhysRevLett.123.103001
      
137. Georg Schmid, Kirsten Schnorr, Sven Augustin, Severin Meister, Hannes Lindenblatt, Florian Trost, Yifan Liu, Tsveta Miteva, Mathieu Gisselbrecht, Stefan Düsterer, Harald Redlin, Rolf Treusch, Kirill Gokhberg, Alexander Kuleff, Lorenz Cederbaum, Claus Schröter, Thomas Pfeifer, and Robert Moshammer,
     Tracing Charge Transfer in Argon Dimers by XUV-Pump IR-Probe Experiments at FLASH,
     J. Chem. Phys. 151, 084314 (2019); https://doi.org/10.1063/1.5116234
      
138. L. Mercadier, A. Benediktovitch, C. Weninger, M.A. Blessenohl, S. Bernitt, H. Bekker, S. Dobrodey, A. Sanchez-Gonzalez, B. Erk, C. Bomme, R. Boll, Z. Yin, V.P. Majety, R. Steinbrügge, M.A. Khalal, F. Penent, J. Palaudoux, P. Lablanquie, A. Rudenko, D. Rolles, J.R. Crespo López-Urrutia, and N.Rohringer,
     Evidence of Extreme Ultraviolet Superfluorescence in Xenon,
     Phys. Rev. Lett. 123, 023201 (2019); https://doi.org/10.1103/PhysRevLett.123.023201
      
139. S. Düsterer, G. Hartmann, C. Bomme, R. Boll, J.T. Costello, B. Erk, A. De Fanis, M. Ilchen, P. Johnsson, T.J. Kelly, B. Manschwetus, T. Mazza, M. Meyer, C. Passow, D. Rompotis, L. Varvarezos, A.K. Kazansky, N.M. Kabachnik,
     Two-color XUV+NIR femtosecond photoionization of neon in the near-threshold region,
     New J. Phys. 21, 063034 (2019); https://doi.org/10.1088/1367-2630/ab2a98
      
140. C. Gerth, G. Brenner, M. Caselle, S. Düsterer, D. Haack, D. Makowski, A. Mielczarek, S. Palutke, L. Rota, V. Rybnikov, C. Schmidt, B. Steffen and K.Tiedtke,
     Linear array detector for online diagnostics of spectral distributions at MHz repetition rates,
     J. Synchrotron Rad. 26, 1514 - 1522 (2019); https://doi.org/10.1107/S1600577519007835
      
141. Andrey A. Sorokin, Yilmaz Bican, Susanne Bonfigt, Maciej Brachmanski, Markus Braune, Ulf Fini Jastrow, Alexander Gottwald, Hendrik Kaser, Mathias Richter and Kai Tiedtke,
     An X-ray gas monitor for free-electron lasers,
     J. Synchrotron Rad. 26, 1092 - 1100 (2019); https://doi.org/10.1107/S1600577519005174
      
142. K. Wenig, M. Wieland, A. Baumann, S. Walther, A. Dimitriou, M.J. Prandolini, O. Schepp, I. Bermúdez Macias, M. Sumfleth, N. Stojanovic, S. Düsterer, J. Rönsch-Schulenburg, E. Zapolnova, R. Pan, M. Drescher, and U. Frühling,
     Electronic decay of core-excited HCl molecules probed by THz streaking,
     Structural Dynamics 6, 034301 (2019); https://doi.org/10.1063/1.5091756
      
143. Tim Oelze, Bernd Schütte, Jan P. Müller, Maria Müller, Marek Wieland, Ulrike Frühling, Markus Drescher, Torsten Golz, Alaa Al-Shemmary, Nikola Stojanovic, and Maria Krikunova,
     Mapping ultrafast ionization of atoms and clusters with terahertz-streaking delay,
     Phys. Rev. A 99, 043423 (2019); https://doi.org/10.1103/PhysRevA.99.043423
      
144. Philippe Wernet,
     Chemical interactions and dynamics with femtosecond X-ray spectroscopy and the role of X-ray free-electron lasers,
     Phil. Trans. R. Soc. A 377, 20170464 (2019); https://doi.org/10.1098/rsta.2017.0464
      
145. M. Ruiz-Lopez, L. Samoylova, G. Brenner, M. Mehrjoo, B. Faatz, M. Kuhlmann, L. Poletto and E. Plönjes,
     Wavefront-propagation simulations supporting the design of a time-delay compensating monochromator beamline at FLASH2,
     J. Synchrotron Rad. 26, 899-905 (2019); https://doi.org/10.1107/S160057751900345X
      
146. R. Pan, E. Zapolnova, T. Golz, A.J. Krmpot, M.D. Rabasovic, J. Petrovic, V. Asgekar, B. Faatz, F. Tavella, A. Perucchi, S. Kovalev, B. Green, G. Geloni, T. Tanikawa, M. Yurkov, E. Schneidmiller, M. Gensch and N. Stojanovic,
     Photon diagnostics at the FLASH THz beamline,
     J. Synchrotron Rad. 26, 700-707 (2019); https://doi.org/10.1107/S1600577519003412
      
147. Georg Schmid, Kirsten Schnorr, Sven Augustin, Severin Meister, Hannes Lindenblatt, Florian Trost, Yifan Liu, Markus Braune, Rolf Treusch, Claus Dieter Schröter, Thomas Pfeifer and Robert Moshammer,
     Reaction microscope endstation at FLASH2,
     J. Synchrotron Rad. 26, 854-867 (2019); https://doi.org/10.1107/S1600577519002236
      
148. Günter Brenner, Siarhei Dziarzhytski, Piter S. Miedema, Benedikt Rösner, Christian David, and Martin Beye,
     Normalized single-shot X-ray absorption spectroscopy at a free-electron laser,
     Opt. Lett. 44, 2157-2160 (2019); https://doi.org/10.1364/OL.44.002157
      
149. M. Hollstein, K. Mertens, S. Klumpp, N. Gerken, S. Palutke, I. Baev, G. Brenner, S. Dziarzhytski, M. Meyer, W. Wurth, D. Pfannkuche and M. Martins,
     Ultrafast charge redistribution in small iodine containing molecules,
     New J. Phys. 21, 033017 (2019); https://doi.org/10.1088/1367-2630/ab1056
      
150. Jörg Rossbach, Jochen R. Schneider, Wilfried Wurth,
     10 years of pioneering X-ray science at the Free-Electron Laser FLASH at DESY,
     Physics Reports 808, 1-74 (2019); https://doi.org/10.1016/j.physrep.2019.02.002
      
151. Georg Schmid, Kirsten Schnorr, Sven Augustin, Severin Meister, Hannes Lindenblatt, Florian Trost, Yifan Liu, Nikola Stojanovic, Alaa Al-Shemmary, Torsten Golz, Rolf Treusch, Michael Gensch, Matthias Kübel, Lutz Foucar, Artem Rudenko, Joachim Ullrich, Claus Dieter Schröter, Thomas Pfeifer, and Robert Moshammer,
     Terahertz-Field-Induced Time Shifts in Atomic Photoemission,
     Phys. Rev. Lett. 122, 073001 (2019); https://doi.org/10.1103/PhysRevLett.122.073001
      
152. Giuseppe Mercurio, Igor Makhotkin, Igor Milov, Young Yong Kim, Ivan Zaluzhnyy, Siarhei Dziarzhytski, Lukas Wenthaus, Ivan A.Vartaniants and Wilfried Wurth,
     Surface structure determination by x-ray standing waves at a free-electron laser,
     New J. Phys. 21, 033031 (2019); https://doi.org/10.1088/1367-2630/aafa47
      
153. Henry N. Chapman,
     Annual Review of Biochemistry: X-Ray Free-Electron Lasers for the Structure and Dynamics of Macromolecules,
     Annu. Rev. Biochem. 88, 9.1-9.24 (2019); https://doi.org/10.1146/annurev-biochem-013118-110744
      
154. Mykola Biednov, Günter Brenner, Benjamin Dicke, Holger Weigelt, Barbara Keitel, Michael Rübhausen and Siarhei Dziarzhytski,
     Alignment of the aberration-free XUV Raman spectrometer at FLASH,
     J. Synchrotron Rad. 26, 18-27 (2019); https://doi.org/10.1107/S160057751801576X
      
155. M. Beye, R.Y. Engel, J.O. Schunck, S. Dziarzhytski, G. Brenner, P.S. Miedema,
     Non-Linear Soft X-Ray Methods on Solids with MUSIX - the Multi-Dimensional Spectroscopy and Inelastic X-Ray Scattering Endstation,
     J. Phys.: Condens. Matter 31, 014003 (2019); https://doi.org/10.1088/1361-648X/aaedf3
     published online Dec. 3, 2018
      
156. Felix Allum, Michael Burt, Kasra Amini, Rebecca Boll, Hansjochen Köckert, Pavel K.Olshin, Sadia Bari, Cédric Bomme, Felix Brauße, Barbara Cunha de Miranda, Stefan Düsterer, Benjamin Erk, Marie Géléoc, Romain Geneaux, Alexander S. Gentleman, Gildas Goldsztejn, Renaud Guillemin, David M. P. Holland, Iyas Ismail, Per Johnsson, Loïc Journel, Jochen Küpper, Jan Lahl, Jason W. L. Lee, Sylvain Maclot, Stuart R. Mackenzie, Bastian Manschwetus, Andrey S. Mereshchenko, Robert Mason, Jérôme Palaudoux, Maria Novella Piancastelli, Francis Penent, Dimitrios Rompotis, Arnaud Rouzée, Thierry Ruchon, Artem Rudenko, Evgeny Savelyev, Marc Simon, Nora Schirmel, Henrik Stapelfeldt, Simone Techert, Oksana Travnikova, Sebastian Trippel, Jonathan G. Underwood, Claire Vallance, Joss Wiese, Farzaneh Ziaee , Mark Brouard, Tatiana Marchenko, and Daniel Rolles,
     Coulomb explosion imaging of CH₃I and CH₂ClI photodissociation dynamics,
     J. Chem. Phys. 149, 204313 (2018); https://doi.org/10.1063/1.5041381
      
157. Daniel Rolles, Rebecca Boll, Benjamin Erk, Dimitrios Rompotis, Bastian Manschwetus,
     An Experimental Protocol for Femtosecond NIR/UV - XUV Pump-Probe Experiments with Free-Electron Lasers,
     J. Vis. Exp. 140, e57055 (2018); http://dx.doi.org/10.3791/57055
      
158. IGOR A. MAKHOTKIN, IGOR MILOV, JAROMIR CHALUPSKÝ, KAI TIEDTKE, HARTMUT ENKISCH, GOSSE DE VRIES, FRANK SCHOLZE, FRANK SIEWERT, JACOBUS M. STURM, KONSTANTIN V. NIKOLAEV, ROBBERT W. E. VAN DE KRUIJS, MARK A. SMITHERS, HENK A. G. M. VAN WOLFEREN, ENRICO G. KEIM, ERIC LOUIS, IWANNA JACYNA, MAREK JUREK, DOROTA KLINGER, JERZY B. PELKA, LIBOR JUHA, VÉRA HÁJKOVÁ, VOJTĚCH VOZDA, TOMÁŠ BURIAN, KAREL SAKSL, BART FAATZ, BARBARA KEITEL, ELKE PLÖNJES, SIEGFRIED SCHREIBER, SVEN TOLEIKIS, ROLF LOCH, MARTIN HERMANN, SEBASTIAN STROBEL, RILPHO DONKER, TOBIAS MEY, AND RYSZARD SOBIERAJSKI,
     Damage accumulation in thin ruthenium films induced by repetitive exposure to femtosecond
     XUV pulses below the single-shot ablation threshold,
     J. Opt. Soc. Am. B 35, 2799-2805 (2018); https://doi.org/10.1364/JOSAB.35.002799
      
159. N. Pontius, M. Beye, C. Trabant, R. Mitzner, F. Sorgenfrei, T. Kachel, M. Wöstmann, S. Roling, H. Zacharias, R. Ivanov, R. Treusch, M. Buchholz, P. Metcalf, C. Schüßler-Langeheine, and A. Föhlisch,
     Probing the non-equilibrium transient state in magnetite by a jitter-free two-color X-ray pump and X-ray probe experiment.,
     Structural Dynamics 5, 054501 (2018); https://doi.org/10.1063/1.5042847
      
160. S. Augustin, M. Schulz, G. Schmid, K. Schnorr, E.V. Gryzlova, H. Lindenblatt, S. Meister, Y. F. Liu, F. Trost, L. Fechner, A.N. Grum-Grzhimailo, S.M. Burkov, M. Braune, R. Treusch, M. Gisselbrecht, C.D. Schröter, T. Pfeifer, R. Moshammer,
     Signatures of autoionization in the angular electron distribution in two-photon double ionization of Ar,
     Phys. Rev. A 98, 033408 (2018); https://doi.org/10.1103/PhysRevA.98.033408
      
161. S. Zeller, M. Kunitski, J. Voigtsberger, M. Waitz, F. Trinter, S. Eckart, A. Kalinin, A. Czasch, L.Ph.H. Schmidt, T. Weber, M. Schöffler, T. Jahnke, and R. Dörner,
     Determination of Interatomic Potentials of He2, Ne2, Ar2, and H2 by Wave Function Imaging,
     Phys. Rev. Lett. 121, 083002 (2018); https://doi.org/10.1103/PhysRevLett.121.083002
      
162. T. Leitner, I. Josefsson, T. Mazza, P. S. Miedema, H. Schröder, M. Beye, K. Kunnus, S. Schreck, S. Düsterer, A. Föhlisch, M. Meyer, M. Odelius, and Ph. Wernet,
     Time-resolved electron spectroscopy for chemical analysis of photodissociation: Photoelectron spectra of Fe(CO)₅, Fe(CO)₄, and Fe(CO)₃,
     J. Chem. Phys. 149, 044307 (2018); https://doi.org/10.1063/1.5035149
      
163. Mario Sauppe, Dimitrios Rompotis, Benjamin Erk, Sadia Bari, Tobias Bischoff, Rebecca Boll, Cédric Bomme, Christoph Bostedt, Simon Dörner, Stefan Düsterer, Torsten Feigl, Leonie Flückiger, Tais Gorkhover, Katharina Kolatzki, Marion Kuhlmann, Bruno Langbehn, Nils Monserud, Erland Müller, Jan P. Müller, Christopher Passow, Daniel Ramm, Daniel Rolles, Kaja Schubert, Lucas Schwob, Björn Senfftleben, Rolf Treusch, Anatoli Ulmer, Holger Weigelt, Jannis Zimbalski, Julian Zimmermann, Thomas Möller and Daniela Rupp,
     XUV double-pulses with femtosecond to 650 picoseconds separation from a multilayer mirror based split-and-delay unit at FLASH,
     J. Synchrotron Rad. 25, 1517-1528 (2018); https://doi.org/10.1107/S1600577518006094
      
164. Benjamin Erk, Jan P. Müller, Cédric Bomme, Rebecca Boll, Günter Brenner, Henry Chapman, Jonathan Correa, Stefan Düsterer, Siarhei Dziarzhytski, Stefan Eisebitt, Heinz Graafsma, Sören Grunewald, Lars Gumprecht, Robert Hartmann, Günter Hauser, Barbara Keitel, Clemens von Korff Schmising, Marion Kuhlmann, Bastian Manschwetus, Laurent Mercadier, Erland Müller, Christopher Passow, Elke Plönjes, Daniel Ramm, Dimitrios Rompotis, Artem Rudenko, Daniela Rupp, Mario Sauppe, Frank Siewert, Dieter Schlosser, Lothar Strüder, Angad Swiderski, Simone Techert, Kai Tiedtke, Thomas Tilp, Rolf Treusch, Ilme Schlichting, Joachim Ullrich, Robert Moshammer, Thomas Möller and Daniel Rolles,
     CAMP@FLASH - An End-Station for Imaging, Electron- and Ion-Spectroscopy, and Pump-Probe Experiments at the FLASH Free-Electron Laser,
     J. Synchrotron Rad. 25, 1529-1540 (2018); https://doi.org/10.1107/S1600577518008585
      
165. Max O. Wiedorn, Salah Awel, Andrew J. Morgan, Kartik Ayyer, Yaroslav Gevorkov, Holger Fleckenstein, Nils Roth, Luigi Adriano, Richard Bean, Kenneth R. Beyerlein, Joe Chen, Jesse Coe, Francisco Cruz-Mazo, Tomas Ekeberg, Rita Graceffa, Michael Heymann, Daniel A. Horke, Juraj Knoška, Valerio Mariani, Reza Nazari, Dominik Oberthür, Amit K. Samanta, Raymond G. Sierra, Claudiu A. Stan, Oleksandr Yefanov, Dimitrios Rompotis, Jonathan Correa, Benjamin Erk, Rolf Treusch, Joachim Schulz, Brenda G. Hogue, Alfonso M. Gañán-Calvo, Petra Fromme, Jochen Küpper, Andrei V. Rode, Saša Bajt, Richard A. Kirian and Henry N. Chapman,
     Rapid sample delivery for megahertz serial crystallography at X-ray FELs,
     IUCrJ 5 (Part 5), 574-584 (2019); https://doi.org/10.1107/S2052252518008369
      
166. Igor Milov, Igor A. Makhotkin, Ryszard Sobierajski, Nikita Medvedev, Vladimir Lipp, Jaromir Chalupský, Jacobus M. Sturm, Kai Tiedtke, Gosse de Vries, Michael Störmer, Frank Siewert, Robbert van de Kruijs, Eric Louis, Iwanna Jacyna, Marek Jurek, Libor Juha, Vĕra Hájková, Vojtĕch Vozda, Tomáž Burian, Karel Saksl, Bart Faatz, Barbara Keitel, Elke Plönjes, Siegfried Schreiber, Sven Toleikis, Rolf Loch, Martin Hermann, Sebastian Strobel, Han-Kwang Nienhuys, Grzegorz Gwalt, Tobias Mey, Hartmut Enkisch, and Fred Bijkerk,
     Mechanism of single-shot damage of Ru thin films irradiated by femtosecond extreme UV free-electron laser,
     Opt. Express 26, 19665-19685 (2018); https://doi.org/10.1364/OE.26.019665
      
167. Felix Brauße, Gildas Goldsztejn, Kasra Amini, Rebecca Boll, Sadia Bari, Cédric  Bomme, Mark Brouard, Michael Burt, Barbara Cunha de Miranda, Stefan Düsterer, Benjamin Erk, Marie Géléoc, Romain Geneaux, Alexander S. Gentleman, Renaud Guillemin, Iyas Ismail, Per Johnsson, Loïc Journel, Thomas Kierspel, Hansjochen Köckert, Jochen Küpper, Pascal Lablanquie, Jan Lahl, Jason W. L. Lee, Stuart R. Mackenzie, Sylvain Maclot, Bastian Manschwetus, Andrey S. Mereshchenko,Terence Mullins, Pavel K. Olshin, Jérôme Palaudoux, Serguei Patchkovskii, Francis Penent, Maria Novella Piancastelli, Dimitrios Rompotis, Thierry Ruchon, Artem Rudenko, Evgeny Savelyev, Nora Schirmel, Simone Techert, Oksana Travnikova, Sebastian Trippel, Jonathan G. Underwood, Claire Vallance, Joss Wiese, Marc Simon, David M. P. Holland, Tatiana Marchenko, Arnaud Rouzée, and Daniel Rolles,
     Time-resolved inner-shell photoelectron spectroscopy: From a bound molecule to an isolated atom,
     Phys. Rev. A 97, 043429 (2018); https://doi.org/10.1103/PhysRevA.97.043429
      
168. Jake D. Koralek, Jongjin B. Kim, Petr Brůža, Chandra B. Curry, Zhijiang Chen, Hans A. Bechtel, Amy A. Cordones, Philipp Sperling, Sven Toleikis, Jan F. Kern, Stefan P. Moeller, Siegfried H. Glenzer & Daniel P. DePonte,
     Generation and characterization of ultrathin free-flowing liquid sheets,
     Nature Communications 9, 1353 (2018); https://dx.doi.org/10.1038/s41467-018-03696-w
      
169. M. Fisher-Levine, R. Boll,  F. Ziaee, C. Bomme, B. Erk, D. Rompotis, T. Marchenko, A. Nomerotski and D. Rolles,
     Time-resolved ion imaging at free-electron lasers using TimepixCam,
     J. Synchrotron Rad. 25, 336-345 (2018); https://doi.org/10.1107/S1600577517018306
      
170. Kasra Amini, Evgeny Savelyev, Felix Brauße, Nora Berrah, Cédric Bomme, Mark Brouard, Michael Burt, Lauge Christensen, Stefan Düsterer, Benjamin Erk, Hauke Höppner, Thomas Kierspel, Faruk Krecinic, Alexandra Lauer, Jason W. L. Lee, Maria Müller, Erland Müller, Terence Mullins, Harald Redlin, Nora Schirmel, Jan Thøgersen, Simone Techert, Sven Toleikis, Rolf Treusch, Sebastian Trippel, Anatoli Ulmer, Claire Vallance, Joss Wiese, Per Johnsson, Jochen Küpper, Artem Rudenko, Arnaud Rouzée, Henrik Stapelfeldt, Daniel Rolles, Rebecca Boll,
     Photodissociation of aligned CH₃I and C₆H₃F₂I molecules probed with time-resolved Coulomb explosion imaging by site-selective extreme ultraviolet ionization,
     Structural Dynamics 5, 014301 (2018); https://dx.doi.org/10.1063/1.4998648
      
171. Armin Azima, Jörn Bödewadt, Oliver Becker, Stefan Düsterer, Nagitha Ekanayake, Rosen Ivanov, Mehdi M. Kazemi, Leslie Lamberto Lazzarino, Christoph Lechner, Theophilos Maltezopoulos, Bastian Manschwetus, Velizar Miltchev, Jost Müller, Tim Plath, Andreas Przystawik, Marek Wieland, Ralph Assmann, Ingmar Hartl, Tim Laarmann, Jörg Rossbach, Wilfried Wurth and Markus Drescher,
     Direct measurement of the pulse duration and frequency chirp of seeded XUV free electron laser pulses,
     New J. Phys. 20, 013010 (2018); https://doi.org/10.1088/1367-2630/aa9b4c
      
172. T.  Suhasaria, J.D. Thrower, R. Frigge, S. Roling, M. Bertin, X. Michaut, J.-H. Fillion and H. Zacharias,
     XUV photodesorption of carbon cluster ions and ionic photofragments from a mixed methane-water ice,
     Phys. Chem. Chem. Phys. 20, 7457-7469 (2018); https://doi.org/10.1039/C8CP00171E
      
173. U. Zastrau, C. Rödel, M. Nakatsutsumi, T. Feigl, K. Appel, B. Chen, T. Döppner, T. Fennel, T. Fiedler, L.B. Fletcher, E. Förster, E. Gamboa, D.O. Gericke, S. Göde, C. Grote-Fortmann, V. Hilbert, L. Kazak, T. Laarmann, H.J. Lee, P. Mabey,
     F. Martinez, K.-H. Meiwes-Broer, H. Pauer, M. Perske, A. Przystawik, S. Roling,S. Skruszewicz, M. Shihab, J. Tiggesbäumker, S. Toleikis, M. Wünsche, H. Zacharias, S.H. Glenzer, and G. Gregori,
     A sensitive EUV Schwarzschild microscope for plasma studies with sub-micrometer resolution,
     Rev. Sci. Instrum. 89, 023703 (2018); https://dx.doi.org/10.1063/1.5007950
      
174. P. Tzallas, B. Bergues, D. Rompotis, N. Tsatrafyllis, S. Chatziathanassiou, A. Muschet, L. Veisz, H. Schröder and D. Charalambidis,
     Time gated ion microscopy of light-atom interactions,
     J. Opt. 20, 024018 (2018); https://doi.org/10.1088/2040-8986/aaa326
      
175. S. Dziarzhytski, F. Siewert, A. Sokolov, G. Gwalt, T. Seliger, M. Rübhausen, H. Weigelt and G. Brenner,
     Diffraction gratings metrology and ray-tracing results for an XUV Raman spectrometer at FLASH,
     Special Issue (PhotonDiag2017),
     J. Synchrotron Rad. 25, 138-144 (2018); https://doi.org/10.1107/S1600577517013066
      
176. L. Poletto, F. Frassetto, G. Brenner, M. Kuhlmann and E. Plönjes,
     Double-grating monochromatic beamline with ultrafast response for FLASH2 at DESY,
     Special Issue (PhotonDiag2017),
     J. Synchrotron Rad. 25, 131-137 (2018); https://doi.org/10.1107/S1600577517013777

177. I. A. Makhotkin, R. Sobierajski, J. Chalupský, K. Tiedtke, G. de Vries, M. Störmer, F. Scholze, F. Siewert, R.W.E. van de Kruijs, I. Milov, E. Louis, I. Jacyna, M. Jurek, D. Klinger, L. Nittler, Y. Syryanyy, L. Juha, V. Hájková, V. Vozda, T. Burian, K. Saksl, B. Faatz, B. Keitel, E. Plönjes, S. Schreiber, S. Toleikis, R. Loch, M. Hermann, S. Strobel, H.-K. Nienhuys, G. Gwalt, T. Mey and H. Enkisch,
     Experimental study of EUV mirror radiation damage resistance under long-term free-electron laser exposures below the single-shot damage threshold,
     Special Issue (PhotonDiag2017),
     J. Synchrotron Rad. 25, 77-84 (2018); https://doi.org/10.1107/S1600577517017362

178. E. Zapolnova, T. Golz, R. Pan, K. Klose, S. Schreiber and N. Stojanovic,
     THz pulse doubler at FLASH: double pulses for pump-probe experiments at X-ray FELs,
     Special Issue (PhotonDiag2017),
     J. Synchrotron Rad. 25, 39-43 (2018); https://doi.org/10.1107/S1600577517015442

179. R. Ivanov, J. Liu, G. Brenner, M. Brachmanski and S. Düsterer,
     FLASH free-electron laser single-shot temporal diagnostic: terahertz-field-driven streaking,
     Special Issue (PhotonDiag2017),
     J. Synchrotron Rad. 25, 26-31 (2018); https://doi.org/10.1107/S160057751701253X

180. M. Braune, J. Buck, M. Kuhlmann, S. Grunewald, S. Düsterer, J. Viefhaus and K. Tiedtke,
     Non-invasive online wavelength measurements at FLASH2 and present benchmark,
     Special Issue (PhotonDiag2017),
     J. Synchrotron Rad. 25, 3-15 (2018); https://doi.org/10.1107/S1600577517013893

181. E. A. Seddon, J. A. Clarke, D. J. Dunning, C. Masciovecchio, C. J.  Milne, F. Parmigiani, D. Rugg, J. C. H. Spence, N. R. Thompson, K. Ueda, S. M. Vinko, J. S. Wark and W. Wurth,
     Short-wavelength free-electron laser sources and science: a review,
     Rep. Prog. Phys. 80, 115901 (2017); https://doi.org/10.1088/1361-6633/aa7cca

182. Michael Burt, Rebecca Boll, Jason W.L. Lee, Kasra Amini, Hansjochen Köckert, Claire Vallance, Alexander S. Gentleman, Stuart R. Mackenzie, Sadia Bari, Cédric Bomme, Stefan Düsterer, Benjamin Erk, Bastian Manschwetus, Erland Müller, Dimitrios Rompotis, Evgeny Savelyev, Nora Schirmel, Simone Techert, Rolf Treusch, Jochen Küpper, Sebastian Trippel, Joss Wiese, Henrik Stapelfeldt, Barbara Cunha de Miranda, Renaud Guillemin, Iyas Ismail, Loïc Journel, Tatiana Marchenko, Jérôme Palaudoux, Francis Penent, Maria Novella Piancastelli, Marc Simon, Oksana Travnikova, Felix Brausse, Gildas Goldsztejn, Arnaud Rouzée, Marie Géléoc, Romain Geneaux, Thierry Ruchon, Jonathan Underwood, David M.P. Holland, Andrey S. Mereshchenko, Pavel K. Olshin, Per Johnsson, Sylvain Maclot, Jan Lahl, Artem Rudenko, Farzaneh Ziaee, Mark Brouard, and Daniel Rolles,
     Coulomb-explosion imaging of concurrent CH₂BrI photodissociation dynamics,
     Phys. Rev. A 96, 043415 (2017); https://doi.org/10.1103/PhysRevA.96.043415

183. Max  O. Wiedorn, Salah Awel, Andrew J. Morgan, Miriam Barthelmess, Richard Bean, Kenneth R. Beyerlein, Leonard M. G. Chavas, Niko Eckerskorn, Holger Fleckenstein, Michael Heymann, Daniel A. Horke, Juraj Knoška, Valerio Mariani, Dominik Oberthür, Nils Roth, Oleksandr Yefanov, Anton Barty, Saša Bajt, Jochen Küpper, Andrei V. Rode, Richard A. Kirian and Henry N. Chapman
     Post-sample aperture for low background diffraction experiments at X-ray free-lectron lasers,
     J. Synchrotron Rad. 24, 1296-1298 (2017); https://doi.org/10.1107/S1600577517011961
      

184. Raimund Schneider, Thomas Mehringer, Giuseppe Mercurio, Lukas Wenthaus, Anton Classen, Günter Brenner, Oleg Gorobtsov, Adrian Benz, Daniel Bhatti, Lars Bocklage, Birgit Fischer, Sergey Lazarev, Yuri Obukhov, Kai Schlage, Petr Skopintsev, Jochen Wagner, Felix Waldmann, Svenja Willing, Ivan Zaluzhnyy, Wilfried Wurth, Ivan A.Vartanyants, Ralf Röhlsberger & Joachim von Zanthier,
     Quantum imaging with incoherently scattered light from a free-electron laser,
     Nature Physics, 14, 126–129 (2018); http://dx.doi.org/10.1038/nphys4301
     published online Oct. 30, 2017
      
185. Bart Faatz, Markus Braune, Olaf Hensler, Katja Honkavaara, Raimund Kammering, Marion Kuhlmann, Elke Ploenjes, Juliane Roensch-Schulenburg, Evgeny Schneidmiller, Siegfried Schreiber, Kai Tiedtke, Markus Tischer, Rolf Treusch,
     Mathias Vogt, Wilfried Wurth, Mikhail Yurkov and Johann Zemella,
     The FLASH Facility: Advanced Options for FLASH2 and Future Perspectives,
     Appl. Sci. 7, 1114 (2017); http://dx.doi.org/10.3390/app7111114
      
186. J. Rönsch-Schulenburg, B. Faatz, K. Honkavaara, M. Kuhlmann, S. Schreiber, R. Treusch,
     Experience with Multi-Beam and Multi-Beamline FEL-Operation,
     8th International Particle Accelerator Conference (IPAC17), Copenhagen, Denmark, May 2017
     J. Phys.: Conf. Ser. 874, 012023 (2017); http://dx.doi.org/10.1088/1742-6596/874/1/012023
      
187. Wolfram Helml, Ivanka Grguraš, Pavle N. Juranić, Stefan Düsterer, Tommaso Mazza, Andreas R. Maier, Nick Hartmann, Markus Ilchen, Gregor Hartmann, Luc Patthey, Carlo Callegari, John T. Costello, Michael Meyer, Ryan N. Coffee, Adrian L. Cavalieri and Reinhard Kienberger,
     Ultrashort Free-Electron Laser X-ray Pulses,
     Appl. Sci. 7, 915 (2017); http://dx.doi.org/10.3390/app7090915
      
188. Michele Buzzi, Mikako Makita, Ludovic Howald, Armin Kleibert, Boris Vodungbo, Pablo Maldonado, Jörg Raabe, Nicolas Jaouen, Harald Redlin, Kai Tiedtke, Peter M. Oppeneer, Christian David, Frithjof Nolting & Jan Lüning,
     Single-shot Monitoring of Ultrafast Processes via X-ray Streaking at a Free Electron Laser,
     Sci. Rep. 7, 7253 (2017); http://dx.doi.org/10.1038/s41598-017-07069-z
      
189. MASOUD MEHRJOO, KLAUS GIEWEKEMEYER, PATRIK VAGOVIČ, STEPHAN STERN, RICHARD BEAN, MARC MESSERSCHMIDT, BARBARA KEITEL, ELKE PLÖNJES, MARION KUHLMANN, TOBIAS MEY, EVGENY A. SCHNEIDMILLER, MIKHAIL V. YURKOV, TORSTEN LIMBERG, AND ADRIAN P. MANCUSO,
     Single-shot determination of focused FEL wave fields using iterative phase retrieval,
     Opt.Express 25,17982-17903 (2017); https://doi.org/10.1364/OE.25.017892
      
190. Ph. Wernet, T. Leitner, I. Josefsson, T. Mazza, P. S. Miedema, H. Schröder, M. Beye, K. Kunnus, S. Schreck, P. Radcliffe, S. Düsterer, M. Meyer, M. Odelius, and A. Föhlisch,
     Direct evidence for sequential dissociation of gas-phase Fe(CO)₅ via a singlet pathway upon excitation at 266 nm,
     J. Chem. Phys. 146, 211103 (2017); http://dx.doi.org/10.1063/1.4984774
      
191. Sergey Usenko, Andreas Przystawik, Markus Alexander Jakob, Leslie Lamberto Lazzarino, Günter Brenner, Sven Toleikis, Christian Haunhorst, Detlef Kip & Tim Laarmann,
     Attosecond interferometry with self-amplified spontaneous emission of a free-electron laser,
     Nature Communications 8, 15626 (2017); https://dx.doi.org/10.1038/ncomms15626
      
192. Tim Plath, Christoph Lechner, Velizar Miltchev, Philipp Amstutz, Nagitha Ekanayake, Leslie Lamberto Lazzarino, Theophilos Maltezopoulos, Jörn Bödewadt, Tim Laarmann & Jörg Roßbach,
     Mapping few-femtosecond slices of ultra-relativistic electron bunches,
     Sci. Rep. 7, 2431 (2017); http://dx.doi.org/10.1038/s41598-017-02184-3
      
193. Clemens von Korff Schmising, David Weder, Tino Noll, Bastian Pfau, Martin Hennecke, Christian Strüber, Ilie Radu, Michael Schneider, Steffen Staeck, Christian M. Günther, Jan Lüning, Alaa el dine Merhe, Jens Buck, Gregor Hartmann, Jens Viefhaus, Rolf Treusch, and Stefan Eisebitt,
     Generating circularly polarized radiation in the extreme ultraviolet spectral range at the free-electron laser FLASH,
     Rev. Sci. Instrum. 88, 053903 (2017); http://dx.doi.org/10.1063/1.4983056
      
194. Stefan Zeller, Maksim Kunitski, Jörg Voigtsberger, Till Jahnke, Reinhard Dörner,
     Tiefkalte Helium-Moleküle,
     Chemie in unserer Zeit 51, 80-81 (2017); http://dx.doi.org/10.1002/ciuz.201790022
      
195. Kasra Amini, Rebecca Boll, Alexandra Lauer, Michael Burt, Jason W. L. Lee, Lauge Christensen, Felix Brauße, Terence Mullins, Evgeny Savelyev, Utuq Ablikim, Nora Berrah, Cédric Bomme, Stefan Düsterer, Benjamin Erk, Hauke Höppner, Per Johnsson, Thomas Kierspel, Faruk Krecinic, Jochen Küpper, Maria Müller, Erland Müller, Harald Redlin, Arnaud Rouzée, Nora Schirmel, Jan Thøgersen, Simone Techert, Sven Toleikis, Rolf Treusch, Sebastian Trippel, Anatoli Ulmer, Joss Wiese, Claire Vallance, Artem Rudenko, Henrik Stapelfeldt, Mark Brouard, and Daniel Rolles,
     Alignment, orientation, and Coulomb explosion of difluoroiodobenzene studied with the pixel imaging mass spectrometry (PImMS) camera,
     J. Chem. Phys. 147, 013933 (2017); http://dx.doi.org/10.1063/1.4982220
      
196. S. Klumpp, N. Gerken, K. Mertens, M. Richter, B. Sonntag, A.A. Sorokin, M. Braune, K. Tiedtke, P. Zimmermann and M. Martins,
     Multiple Auger cycle photoionisation of manganese atoms by short soft x-ray pulses,
     New J. Phys. 19, 043002 (2017); https://doi.org/10.1088/1367-2630/aa660a
      
197. Evgeny Savelyev, Rebecca Boll, Cédric Bomme, Nora Schirmel, Harald Redlin, Benjamin Erk, Stefan Düsterer, Erland Müller, Hauke Höppner, Sven Toleikis, Jost Müller, Marie Kristin Czwalinna, Rolf Treusch, Thomas Kierspel, Terence Mullins, Sebastian Trippel, Joss Wiese, Jochen Küpper, Felix Brauße, Faruk Krecinic, Arnaud Rouzée, Piotr Rudawski, Per Johnsson, Kasra Amini, Alexandra Lauer, Michael Burt, Mark Brouard, Lauge Christensen, Jan Thøgersen, Henrik Stapelfeldt, Nora Berrah, Maria Müller, Anatoli Ulmer, Simone Techert, Artem Rudenko, Daniel Rolles,
     Jitter-Correction for IR/UV-XUV Pump-Probe Experiments at the FLASH Free-Electron Laser,
     New J. Phys. 19, 043009 (2017), https://doi.org/10.1088/1367-2630/aa652d
      
198. O.Yu. Gorobtsov, G. Mercurio, G. Brenner, U. Lorenz, N. Gerasimova, R.P. Kurta, F. Hieke, P. Skopintsev, I. Zaluzhnyy, S. Lazarev, D. Dzhigaev, M. Rose, A. Singer, W. Wurth, and I.A. Vartanyants,
     Statistical properties of a free-electron laser revealed by Hanbury Brown-Twiss interferometry,
     Phys. Rev. A 95, 023843 (2017); http://dx.doi.org/10.1103/PhysRevA.95.023843
      
199. J. KRZYWINSKI, A. ANDREJCZUK, R.M. BIONTA, T. BURIAN, J. CHALUPSK´Y, M. JUREK, M. KIRM, V. NAGIRNYI, R. SOBIERAJSKI, K. TIEDTKE, S. VIELHAUER, AND L. JUHA,
     Saturation of a Ce:Y₃Al₅O₁₂ scintillator response to ultra-short pulses of extreme ultraviolet soft X-ray and X-ray laser radiation,
     Opt. Mater. Express 7, 665-675 (2017); https://doi.org/10.1364/OME.7.000665
      
200. E.A. Schneidmiller, B. Faatz, M. Kuhlmann, J. Rönsch-Schulenburg, S. Schreiber, M. Tischer, and M.V. Yurkov,
     First operation of a harmonic lasing self-seeded free electron laser,
     Phys. Rev. Accel. Beams 20, 020705 (2017), http://dx.doi.org/10.1103/PhysRevAccelBeams.20.020705
      
201. Tim Oelze, Bernd Schütte, Maria Müller, Jan P. Müller, Marek Wieland, Ulrike Frühling, Markus Drescher, Alaa Al-Shemmary, Torsten Golz, Nikola Stojanovic & Maria Krikunova,
     Correlated electronic decay in expanding clusters triggered by intense XUV pulses from a Free-Electron-Laser,
     Sci. Rep. 7, 40736 (2017); http://dx.doi.org/10.1038/srep40736
      
202. Stefan Zeller, Maksim Kunitski, Jörg Voigtsberger, Anton Kalinin, Alexander Schottelius, Carl Schober, Markus Waitz, Hendrik Sann, Alexander Hartung, Tobias Bauer, Martin Pitzer, Florian Trinter, Christoph Goihl, Christian Janke, Martin
     Richter, Gregor Kastirke, Miriam Weller, Achim Czasch, Markus Kitzler, Markus Braune, Robert E. Grisenti, Wieland Schöllkopf, Lothar Ph. H. Schmidt, Markus S. Schöffler, Joshua B. Williams, Till Jahnke, and Reinhard Dörner,
     Imaging the He₂ quantum halo state using a free electron laser,
     PNAS 113, 14651-14655 (2016); published ahead of print December 6, 2016; https://dx.doi.org/10.1073/pnas.1610688113
      
203. Daniela Rupp, Leonie Flückiger, Marcus Adolph, Tais Gorkhover, Maria Krikunova, Jan Philippe Müller, Maria Müller, Tim Oelze, Yevheniy Ovcharenko, Benjamin Röben, Mario Sauppe, Sebastian Schorb, David Wolter, Rolf Mitzner, Michael Wöstmann, Sebastian Roling, Marion Harmand, Rolf Treusch, Mathias Arbeiter, Thomas Fennel, Christoph Bostedt, and Thomas Möller,
     Recombination-Enhanced Surface Expansion of Clusters in Intense Soft X-ray Laser Pulses,
     Phys. Rev. Lett. 117, 153401 (2016); https://doi.org/10.1103/PhysRevLett.117.153401
      
204. T. Tanikawa, A. Hage, M. Kuhlmann, J. Gonschior, S. Grunewald, E. Plönjes, S. Düsterer, G. Brenner, S. Dziarzhytski, M. Braune, M. Brachmanski, Z. Yin, F. Siewert, T. Dzelzainis, B. Dromey, M.J. Prandolini, F. Tavella, M. Zepf, B. Faatz,
     First observation of SASE radiation using the compact wide-spectral-range XUV spectrometer at FLASH2,
     Nucl. Instrum. and Meth. A 830, 170-175 (2016), http://dx.doi.org/10.1016/j.nima.2016.05.088
      
205. S. Düsterer, G. Hartmann, F. Babies, A. Beckmann, G. Brenner, J. Buck, J. Costello, L. Dammann, A. De Fanis, P. Geßler, L. Glaser, M. Ilchen, P. Johnsson, A.K. Kazansky, T.J. Kelly, T. Mazza, M. Meyer, V.L. Nosik, I.P. Sazhina, F. Scholz, J. Seltmann, H. Sotoudi, J. Viefhaus and N.M. Kabachnik,
     Angle resolved photoelectron spectroscopy of two-color XUV–NIR ionization with polarization control,
     J. Phys. B: At. Mol. Opt. Phys. 49, 165003 (2016); http://dx.doi.org/10.1088/0953-4075/49/16/165003
      
206. Thomas Schlathölter, Geert Reitsma, Dmitrii Egorov, Olmo Gonzalez-Magaña, Sadia Bari, Leon Boschmann, Erwin Bodewits, Kirsten Schnorr, Georg Schmid, Claus Dieter Schröter, Robert Moshammer, Ronnie Hoekstra,
     Multiple Ionization of Free Ubiquitin Molecular Ions in Extreme Ultraviolet Free-Electron Laser Pulses,
     Angew. Chem. 128, 10899-10903 (2016); http://dx.doi.org/10.1002/ange.201605335
     also in International Edition via http://dx.doi.org/10.1002/anie.201605335
      
207. M. Ilchen, T. Mazza, E.T. Karamatskos, D. Markellos, S. Bakhtiarzadeh, A.J. Rafipoor, T.J. Kelly, N. Walsh, J.T. Costello, P. O’Keeffe, N. Gerken, M. Martins, P. Lambropoulos, and M. Meyer,
     Two-electron processes in multiple ionization under strong soft-x-ray radiation,
     Phys. Rev. A 94, 013413 (2016); http://dx.doi.org/10.1103/PhysRevA.94.013413
      
208. RYSZARD SOBIERAJSKI, IWANNA JACYNA, PIOTR DŁUŻEWSKI, MARCIN T. KLEPKA, DOROTA KLINGER, JERZY B. PEŁKA, TOMÁŠ BURIAN, VĚRA HÁJKOVÁ, LIBOR JUHA, KAREL SAKSL, VOJTĚCH VOZDA, IGOR MAKHOTKIN, ERIC LOUIS, BART FAATZ, KAI TIEDTKE, SVEN TOLEIKIS, HARTMUT ENKISCH, MARTIN HERMANN, SEBASTIAN STROBEL, ROLF A. LOCH, AND JAROMIR CHALUPSKY,
     Role of heat accumulation in the multi-shot damage of silicon irradiated with femtosecond XUV pulses at a 1 MHz repetition rate,
     Opt. Express 24, 15468-15477 (2016); http://dx.doi.org/10.1364/OE.24.015468
      
209. Tim Plath, Philipp Amstutz, Jörn Bödewadt, Günter Brenner, Nagitha Ekanayake, Bart Faatz, Kirsten Hacker, Katja Honkavaara, Leslie Lamberto Lazzarino, Christoph Lechner, Theophilos Maltezopoulos, Matthias Scholz, Siegfried Schreiber, Mathias Vogt, Johann Zemella and Tim Laarmann,
     Free-electron laser multiplex driven by a superconducting linear accelerator,
     J. Synchrotron Rad. 23, 1070-1075 (2016); http://dx.doi.org/10.1107/S1600577516009620
      
210. B. Faatz, E. Plönjes, S. Ackermann, A. Agababyan,V. Asgekar, V. Ayvazyan, S. Baark, N. Baboi, V. Balandin, N. von Bargen, Y. Bican, O. Bilani, J. Bödewadt, M. Böhnert, R. Böspflug, S. Bonfigt, H. Bolz, F. Borges, O. Borkenhagen, M. Brachmanski, M. Braune, A. Brinkmann, O. Brovko, T. Bruns, P. Castro, J. Chen, M.K. Czwalinna, H. Damker, W. Decking, M. Degenhardt, A. Delfs, T. Delfs, H. Deng, M. Dressel, H.-T. Duhme, S. Düsterer, H. Eckoldt, A. Eislage, M. Felber, J. Feldhaus, P. Gessler, M. Gibau, N. Golubeva, T. Golz, J. Gonschior, A. Grebentsov, M. Grecki, C. Grün, S. Grunewald, K. Hacker, L. Hänisch, A. Hage, T. Hans, E. Hass, A. Hauberg, O. Hensler, M. Hesse, K. Heuck, A. Hidvegi, M. Holz, K. Honkavaara, H. Höppner, A. Ignatenko, J. Jäger, U. Jastrow, R. Kammering, S. Karstensen, A. Kaukher, H. Kay, B. Keil, K. Klose, V. Kocharyan, M. Köpke, M. Körfer, W. Kook, B. Krause, O. Krebs, S. Kreis, F. Krivan, J. Kuhlmann, M. Kuhlmann, G. Kube, T. Laarmann, C. Lechner, S. Lederer, A. Leuschner, D. Liebertz, J. Liebing, A. Liedtke, L. Lilje, T. Limberg, D. Lipka, B. Liu, B. Lorbeer, K. Ludwig, H. Mahn, G. Marinkovic, C. Martens, F. Marutzky, M. Maslocv, D. Meissner, N. Mildner, V. Miltchev, S. Molnar, D. Mross, F. Müller, R. Neumann, P. Neumann, D. Nölle, F. Obier, M. Pelzer, H.-B. Peters, K. Petersen, A. Petrosyan, G. Petrosyan, L. Petrosyan, V. Petrosyan, A. Petrov, S. Pfeiffer, A. Piotrowski, Z. Pisarov, T. Plath, P. Pototzki, M.J. Prandolini, J. Prenting, G. Priebe, B. Racky, T. Ramm, K. Rehlich, R. Riedel, M. Roggli, M. Röhling, J. Rönsch-Schulenburg, J. Rossbach, V. Rybnikov, J. Schäfer, J. Schaffran, H. Schlarb, G. Schlesselmann, M. Schlösser, P. Schmid, C. Schmidt, F. Schmidt-Föhre, M. Schmitz, E. Schneidmiller, A. Schöps, M. Scholz, S. Schreiber, K. Schütt, U. Schütz, H. Schulte-Schrepping, M. Schulz, A. Shabunov, P. Smirnov, E. Sombrowski, A. Sorokin, B. Sparr, J. Spengler, M. Staack, M. Stadler, C. Stechmann, B. Steffen, N. Stojanovic, V. Sychev, E. Syresin, T. Tanikawa, F. Tavella,N. Tesch, K. Tiedtke, M. Tischer, R. Treusch, S. Tripathi, P. Vagin, P. Vetrov, S. Vilcins, M. Vogt, A. de Zubiaurre Wagner, T. Wamsat, H. Weddig,G. Weichert, H. Weigelt,N. Wentowski, C. Wiebers, T. Wilksen, A. Willner, K. Wittenburg, T. Wohlenberg, J. Wortmann, W. Wurth, M. Yurkov, I. Zagorodnov and J. Zemella,
     Simultaneous operation of two soft x-ray free-electron lasers driven by one linear accelerator,
     New J. Phys. 18, 062002 (2016); http://dx.doi.org/10.1088/1367-2630/18/6/062002
      
211. Wilfried Wurth,
     Surface Science Studies with Free Electron Lasers: Real-Time Observations of Electronic Structure Changes during Reactions,
     Synchrotron Radiation News 29, 32-35 (2016); http://dx.doi.org/10.1080/08940886.2016.1174045
      
212. L. Flückiger, D. Rupp, M. Adolph, T. Gorkhover, M. Krikunova, M. Müller, T. Oelze, Y. Ovcharenko, M. Sauppe, S. Schorb, C. Bostedt, S. Düsterer, M. Harmand, H. Redlin, R. Treusch and T. Möller,
     Time-resolved x-ray imaging of a laser-induced nanoplasma and its neutral residuals,
     New J. Phys. 18, 043017 (2016); http://dx.doi.org/10.1088/1367-2630/18/4/043017
      
213. Salah Awel, Richard A. Kirian, Niko Eckerskorn, Max Wiedorn, Daniel A. Horke, Andrei V. Rode, Jochen Küpper, and Henry N. Chapman,
     Visualizing aerosol-particle injection for diffractive-imaging experiments,
     Opt. Express 24, 6507-6521 (2016); http://dx.doi.org/10.1364/OE.24.006507
      
214. M. Dell’Angela, F. Hieke, F. Sorgenfrei, N. Gerken, M. Beye, N. Gerasimova, H. Redlin, W. Wurth,
     Ultrafast surface dynamics probed with time resolved photoemission,
     Surf. Sci. 643, 197-202 (2016); http://dx.doi.org/10.1016/j.susc.2015.08.011

215. Siarhei Dziarzhytski, Natalia Gerasimova, Rene Goderich, Tobias Mey, Ruben Reininger, Michael Rübhausen, Frank Siewert, Holger Weigelt and Günter Brenner,
     Microfocusing at the PG1 beamline at FLASH,
     Special Issue (PhotonDiag2015),
     J. Synchrotron Rad. 23, 123-131 (2016); http://dx.doi.org/10.1107/S1600577515023127

216. Robin Engel, Stefan Düsterer, Günter Brenner and Ulrich Teubner,
     Quasi-real-time photon pulse duration measurement by analysis of FEL radiation spectra,
     Special Issue (PhotonDiag2015),
     J. Synchrotron Rad. 23, 118-122 (2016); http://dx.doi.org/10.1107/S1600577515022997

217. I. V. Kozhevnikov, A. V. Buzmakov, F. Siewert, K. Tiedtke, M. Störmer, L. Samoylova and H. Sinn,
     Growth of nano-dots on the grazing-incidence mirror surface under FEL irradiation,
     Special Issue (PhotonDiag2015),
     J. Synchrotron Rad. 23, 78-90 (2016); http://dx.doi.org/10.1107/S160057751502202X

218. Barbara Keitel, Elke Plönjes, Svea Kreis, Marion Kuhlmann, Kai Tiedtke, Tobias Mey, Bernd Schäfer and Klaus Mann, Hartmann wavefront sensors and their application at FLASH,
     Special Issue (PhotonDiag2015),
     J. Synchrotron Rad. 23, 43-49 (2016); http://dx.doi.org/10.1107/S1600577515020354
      

219. Markus Braune, Günter Brenner, Siarhei Dziarzhytski, Pavle Juranić, Andrey Sorokin and Kai Tiedtke,
     A non-invasive online photoionization spectrometer for FLASH2,
     Special Issue (PhotonDiag2015),
     J. Synchrotron Rad. 23, 10-20 (2016); http://dx.doi.org/10.1107/S1600577515022675
      
220. P. Hayden, J. Dardis, P. Hough, V. Richardson, E.T. Kennedy, J.T. Costello, S. Düsterer, H. Redlin, J. Feldhaus, W.B. Li, D. Cubaynes, M. Meyer,
     The Laser-assisted photoelectric effect of He, Ne, Ar and Xe in intense extreme ultraviolet and infrared laser fields,
     J. Mod. Opt. 63, 358-366 (2016); http://dx.doi.org/10.1080/09500340.2015.1117669
     published online Dec. 30, 2015
      
221. S. Palutke, N.C. Gerken, K. Mertens, S. Klumpp, A. Mozzanica, B. Schmitt, C. Wunderer, H. Graafsma, K.-H. Meiwes-Broer, W. Wurth and M. Martins,
     Spectrometer for shot-to-shot photon energy characterization in the multi-bunch mode of the free electron laser at Hamburg,
     Rev. Sci. Instrum. 86, 113107(2015); http://dx.doi.org/10.1063/1.4936293
      
222. U. Zastrau, P. Sperling, C. Fortmann-Grote, A. Becker, T. Bornath, R. Bredow, T. Döppner, T. Fennel, L.B. Fletcher, E. Förster, S. Göde, G. Gregori, M. Harmand, V. Hilbert, T. Laarmann, H.J. Lee, T. Ma, K.H. Meiwes-Broer, J.P. Mithen, C.D. Murphy, M. Nakatsutsumi, P. Neumayer, A. Przystawik, S. Skruszewicz, J. Tiggesbäumker, S. Toleikis, T.G. White, S.H. Glenzer, R. Redmer and T.Tschentscher,
     Ultrafast electron kinetics in short pulse laser-driven dense hydrogen,
     J. Phys. B: At. Mol. Opt. Phys. 48, 224004 (2015);  http://dx.doi.org/10.1088/0953-4075/48/22/224004
      
223. A. Przystawik, L. Schroedter, M. Müller, M. Adolph, C. Bostedt, L. Flückiger,T. Gorkhover, A. Kickermann, M. Krikunova, L. Nösel, T. Oelze, Y. Ovcharenko, D. Rupp, M. Sauppe, S. Schorb, S. Usenko, T. Möller and T. Laarmann,
     Ionization dynamics of Xe nanoplasma formation studied with XUV fluorescence spectroscopy,
     J. Phys. B: At. Mol. Opt. Phys. 48, 184002 (2015); http://dx.doi.org/10.1088/0953-4075/48/18/184002
      
224. M. Müller, L. Schroedter, T. Oelze, L. Nösel, A. Przystawik, A. Kickermann, M. Adolph, T. Gorkhover, L. Flückiger, M. Krikunova, M. Sauppe, Y. Ovcharenko, S. Schorb, C. Bostedt, D. Rupp, T. Laarmann and T. Möller,
     Ionization dynamics of XUV excited clusters: the role of inelastic electron collisions,
     J. Phys. B: At. Mol. Opt. Phys. 48, 174002 (2015); http://dx.doi.org/10.1088/0953-4075/48/17/174002
      
225. T. Mazza, E.V. Gryzlova, A.N. Grum-Grzhimailo, A.K. Kazansky, N.M. Kabachnik, M. Meyer,
     Dichroism in the photoionisation of atoms at XUV free-electron lasers,
     J. Electron Spectrosc. Relat. Phenom. 204, 313-321 (2015); http://dx.doi.org/10.1016/j.elspec.2015.08.011
      
226. E.V. Gryzlova, A.N. Grum-Grzhimailo, E.I. Staroselskaya, S.I. Strakhova,
     Similarity between the angular distributions of the first- and second-step electrons in sequential two-photon atomic double ionization,
     J. Electron Spectrosc. Relat. Phenom. 204, 277-283 (2015); http://dx.doi.org/10.1016/j.elspec.2015.08.016
      
227. E. Plönjes and K. Tiedtke,
     The Soft X-ray Free-Electron Laser FLASH at DESY
     in "Optical Technologies for Extreme-Ultraviolet and Soft X-ray Coherent Sources",
     Canova, Federico, Poletto, Luca (Eds.);
     Springer Series in Optical Sciences, Vol. 197, Springer, Heidelberg  2015,
     ISBN 978-3-662-47443-3, http://dx.doi.org/10.1007/978-3-662-47443-3
      
228. K. Schnorr, A. Senftleben, G. Schmid, S. Augustin, M. Kurka, A. Rudenko, L. Foucar, A. Broska, K. Meyer, D. Anielski, R. Boll, D. Rolles, M. Kübel, M.F. Kling, Y.H. Jiang, S. Mondal, T. Tachibana, K. Ueda, T. Marchenko, M. Simon, G.Brenner, R. Treusch, S. Scheit, V. Averbukh, J. Ullrich, T. Pfeifer, C.D. Schröter, R. Moshammer,
     Time-resolved study of ICD in Ne dimers using FEL radiation,
     J. Electron Spectrosc. Relat. Phenom. 204, 245-256 (2015); http://dx.doi.org/10.1016/j.elspec.2015.07.009
      
229. U. Frühling, F. Trinter, F. Karimia, J.B. Williams, T. Jahnke,
     Time-resolved studies of interatomic Coulombic decay,
     J. Electron Spectrosc. Relat. Phenom. 204, 237-244 (2015); http://dx.doi.org/10.1016/j.elspec.2015.06.012
      
230. Artem Rudenko and Daniel Rolles,
     Time-resolved studies with FELs,
     J. Electron Spectrosc. Relat. Phenom. 204, 228-236 (2015); http://dx.doi.org/10.1016/j.elspec.2015.07.010
      
231. R.A. Kirian, S. Awel, N. Eckerskorn, H. Fleckenstein, M. Wiedorn, L. Adriano, S. Bajt, M. Barthelmess, R. Bean, K.R. Beyerlein, L.M.G. Chavas, M. Domaracky, M. Heymann, D.A. Horke, J. Knoska, M. Metz, A. Morgan, D. Oberthuer, N. Roth, T. Sato, P.L. Xavier, O. Yefanov, A.V. Rode, J. Küpper, and H.N. Chapman,
     Simple convergent-nozzle aerosol injector for single-particle diffractive imaging with Xray free-electron lasers,
     Structural Dynamics 2, 041717 (2015); http://dx.doi.org/10.1063/1.4922648
      
232. G. Schönhense, K. Medjanik, C. Tusche, M. de Loos, B. van der Geer, M. Scholz, F. Hieke, N. Gerken, J. Kirschner, W. Wurth,
     Correction of the deterministic part of space-charge interaction in momentum microscopy of charged particles,
     Ultramicroscopy 159, 488-496 (2015); http://dx.doi.org/10.1016/j.ultramic.2015.05.015
      
233. Gerd Schönhense, Katerina Medjanik, Hans-Joachim Elmers,
     Space-, time- and spin-resolved photoemission,
     J. Electron Spectrosc. Relat. Phenom. 200, 94–118 (2015); http://dx.doi.org/10.1016/j.elspec.2015.05.016
      
234. M. Braune, G. Hartmann, M. Ilchen, A. Knie, T. Lischke, A. Reinköster, A. Meissner, S. Deinert, L. Glaser, O. Al-Dossary, A. Ehresmann, A.S. Kheifets and J. Viefhaus,
     Electron angular distributions of noble gases in sequential two-photon double ionization,
     J. Mod. Opt. 63, 324-333 (2016); http://dx.doi.org/10.1080/09500340.2015.1047422
     published online Jun. 3, 2015
      
235. K.Mertens, N.Gerken, S.Klumpp, M.Braune and M.Martins,
     Soft X-ray multiphoton excitation of small iodine methane derivatives,
     J. Mod. Opt. 63, 383-389 (2016); http://dx.doi.org/10.1080/09500340.2015.1046521
     published online May 27, 2015
      
236. Tomáš Burian, Věra Hájková, Jaromír Chalupský, Luděk Vyšín, Pavel Boháček, Martin Přeček, Jan Wild, Cigdem Özkan, Nicola Coppola, Shafagh Dastjani Farahani, Joachim Schulz, Harald Sinn, Thomas Tschentscher, Jérôme Gaudin, Saša Bajt, Kai Tiedtke, Sven Toleikis, Henry N. Chapman, Rolf A. Loch, Marek Jurek, Ryszard Sobierajski, Jacek Krzywinski, Stefan Moeller, Marion Harmand, Germano Galasso, Mitsuru Nagasono, Karel Saskl, Pavol Sovák, and Libor Juha,
     Soft x-ray free-electron laser induced damage to inorganic scintillators,
     Opt. Mater. Express 5, 254-264 (2015); http://dx.doi.org/10.1364/OME.5.000254
      
237. T. Mazza, A. Karamatskou, M. Ilchen, S. Bakhtiarzadeh, A.J. Rafipoor, P. O’Keeffe, T.J. Kelly, N. Walsh, J.T. Costello, M. Meyer & R. Santra,
     Sensitivity of nonlinear photoionization to resonance substructure in collective excitation,
     Nature Communications 6, 6799 (2015); http://dx.doi.org/10.1038/ncomms7799
      
238. Ingo Barke, Hannes Hartmann, Daniela Rupp, Leonie Flückiger, Mario Sauppe, Marcus Adolph, Sebastian Schorb, Christoph Bostedt, Rolf Treusch, Christian Peltz, Stephan Bartling, Thomas Fennel, Karl-Heinz Meiwes-Broer & Thomas Möller,
     The 3D-architecture of individual free silver nanoparticles captured by X-ray scattering,
     Nature Communications 6, 6187 (2015); http://dx.doi.org/10.1038/ncomms7187
      
239. S. Schulz, I. Grguraš, C. Behrens, H. Bromberger, J.T. Costello, M.K. Czwalinna, M. Felber, M.C. Hoffmann, M. Ilchen, H.Y. Liu, T. Mazza, M. Meyer, S. Pfeiffer, P. Prędki, S. Schefer, C. Schmidt, U. Wegner, H. Schlarb & A.L. Cavalieri,
     Femtosecond all-optical synchronization of an X-ray free-electron laser,
     Nature Communications 6, 5938 (2015); http://dx.doi.org/10.1038/ncomms6938
      
240. S. Düsterer, M. Rehders, A. Al-Shemmary, C. Behrens, G. Brenner, O. Brovko, M. DellAngela, M. Drescher, B. Faatz, J. Feldhaus, U. Frühling, N. Gerasimova, N. Gerken, C. Gerth, T. Golz, A. Grebentsov, E. Hass, K. Honkavaara, V. Kocharian, M. Kurka, Th. Limberg, R. Mitzner, R. Moshammer, E. Plönjes, M. Richter, J. Rönsch-Schulenburg, A. Rudenko, H. Schlarb, B. Schmidt, A. Senftleben, E.A. Schneidmiller, B. Siemer, F. Sorgenfrei, A.A. Sorokin, N. Stojanovic, K. Tiedtke, R. Treusch, M. Vogt, M. Wieland, W. Wurth, S. Wesch, M. Yan, M.V. Yurkov, H. Zacharias, and S. Schreiber,
     Development of experimental techniques for the characterization of ultrashort photon
     pulses of extreme ultraviolet free-electron lasers,
     Phys. Rev. STAB 17, 120702 (2014); http://dx.doi.org/10.1103/PhysRevSTAB.17.120702
      
241. Asawari D. Rath, Nicusor Timneanu, Filipe R.N.C. Maia, Johan Bielecki, Holger Fleckenstein, Bianca Iwan, Martin Svenda, Dirk Hasse, Gunilla Carlsson, Daniel Westphal, Kerstin Mühlig, Max Hantke, Tomas Ekeberg, M. Marvin Seibert, Alessandro Zani, Mengning Liang, Francesco Stellato, Richard Kirian, Richard Bean, Anton Barty, Lorenzo Galli, Karol Nass, Miriam Barthelmess, Andrew Aquila, Sven Toleikis, Rolf Treusch, Sebastian Roling, Michael Wöstmann, Helmut Zacharias, Henry N.Chapman, Saša Bajt, Daniel DePonte, Janos Hajdu, and Jakob Andreasson,
     Explosion dynamics of sucrose nanospheres monitored by time of flight spectrometry and coherent diffractive imaging at the split-and-delay beam line of the FLASH soft X-ray laser,
     Opt. Express 22, 28914 (2014); http://dx.doi.org/10.1364/OE.22.028914
      
242. V. Hilbert, C. Rödel, G. Brenner, T. Döppner, S. Düsterer, S. Dziarzhytski, L. Fletcher, E. Förster, S.H. Glenzer, M. Harmand, N.J. Hartley, L. Kazak, D. Komar, T. Laarmann, H.J. Lee, T. Ma, M. Nakatsutsumi, A. Przystawik, H. Redlin, S. Skruszewicz, P. Sperling, J. Tiggesbäumker, S. Toleikis, and U. Zastrau,
     Spatio-temporal coherence of free-electron laser radiation in the extreme ultraviolet determined by a Michelson interferometer,
     Appl. Phys. Lett. 105, 101102 (2014); http://dx.doi.org/10.1063/1.4895455
      
243. K. Schnorr, A. Senftleben, M. Kurka, A. Rudenko, G. Schmid, T. Pfeifer, K. Meyer, M. Kübel, M.F. Kling, Y.H. Jiang, R. Treusch, S. Düsterer, B. Siemer, M. Wöstmann, R. Mitzner, T.J.M. Zouros, J. Ullrich, C.D. Schröter, R.Moshammer,
     Electron Rearrangement Dynamics in Dissociating I₂ⁿ⁺ Molecules Accessed by Extreme Ultraviolet Pump-Probe Experiments,
     Phys. Rev. Lett. 113, 073001 (2014); http://dx.doi.org/10.1103/PhysRevLett.113.073001
      
244. Daniela Rupp, Marcus Adolph, Leonie Flückiger, Tais Gorkhover, Maria Müller, Mario Sauppe, David Wolter, Sebastian Schorb, Rolf Treusch, Christoph Bostedt, and Thomas Möller,
     Generation and structure of extremely large clusters in pulsed jets,
     J. Chem. Phys. 141, 044306 (2014); http://dx.doi.org/10.1063/1.4890323
      
245. A. Rusydi, A. Goos, S. Binder, A. Eich, K. Botril, P. Abbamonte, X. Yu, M.B.H. Breese, H. Eisaki, Y. Fujimaki, S. Uchida, N. Guerassimova, R. Treusch, J. Feldhaus, R. Reininger, M.V. Klein, and M. Rübhausen,
     Electronic screening enhanced hole-pairing in two-leg spin-ladder via high-resolution resonant inelastic X-ray scattering at Cu M-edges,
     Phys. Rev. Lett. 113, 067001 (2014); http://dx.doi.org/10.1103/PhysRevLett.113.067001
      
246. U. Zastrau, P. Sperling, A. Becker, T. Bornath, R. Bredow, T. Döppner, S. Dziarzhytski, T. Fennel, L.B. Fletcher, E. Förster, C. Fortmann, S.H. Glenzer, S. Göde, G. Gregori, M. Harmand, V. Hilbert, B. Holst, T. Laarmann, H.J. Lee, T. Ma, J.P. Mithen, R. Mitzner, C.D. Murphy, M. Nakatsutsumi, P. Neumayer, A. Przystawik, S. Roling, M. Schulz, B. Siemer, S. Skruszewicz, J. Tiggesbäumker, S. Toleikis, T. Tschentscher, T. White, M. Wöstmann, H. Zacharias, and R. Redmer,
     Equilibration dynamics and conductivity of warm dense hydrogen,
     Phys. Re. E 90, 013104 (2014); http://dx.doi.org/10.1103/PhysRevE.90.013104
      
247. Tobias Mey, Bernd Schäfer, Klaus Mann, Barbara Keitel, Marion Kuhlmann, and Elke Plönjes,
     Wigner distribution measurements of the spatial coherence properties of the free electron laser FLASH,
     Opt. Express 22, 16571-16584 (2014); http://dx.doi.org/10.1364/OE.22.016571
      
248. V. Asgekar, G. Geloni, V. Kocharyan, N. Stojanovic, P. Michel, M. Gensch,
     Interference effects in super-radiant THz sources,
     Infrared Phys. Techn. 64, 26-32 (2014); http://dx.doi.org/10.1016/j.infrared.2014.01.009
      
249. M. Stránský and Karel Rohlena,
     Optical spectra of FLASH generated plasmas,
     Phys. Scr. T161, 014028 (2014); http://dx.doi.org/10.1088/0031-8949/2014/T161/014028
      
250. A. Fognini, G. Salvatella, T.U. Michlmayr, C. Wetli, U. Ramsperger, T. Bähler, F. Sorgenfrei, M. Beye, A. Eschenlohr, N. Pontius, C. Stamm, F. Hieke, M. Dell’Angela, S. de Jong, R. Kukreja, N. Gerasimova, V. Rybnikov, H. Redlin, J. Raabe, A. Föhlisch, H.A. Dürr, W. Wurth, D. Pescia, A. Vaterlaus and Y. Acremann,
     The role of space charge in spin-resolved photoemission experiments,
     New J. Phys. 16, 043031 (2014); http://dx.doi.org/10.1088/1367-2630/16/4/043031
      
251. K. Schnorr, A. Senftleben, G. Schmid, A. Rudenko, M. Kurka, K. Meyer, L. Foucar, M. Kübel, M.F. Kling, Y.H. Jiang, S. Düsterer, R. Treusch, C.D. Schröter, J. Ullrich, T. Pfeifer, and R. Moshammer,
     Multiple ionization and fragmentation dynamics of molecular Iodine studied in IRXUV pump-probe experiments,
     Faraday Discuss. 171, 41-56 (2014); http://dx.doi.org/10.1039/C4FD00031E
      
252. Björn Siemer, Sebastian Roling, Robert Frigge, Tim Hoger, Rolf Mitzner and Helmut Zacharias,
     Free-electron laser induced processes in thin molecular ice,
     Faraday Discuss. 168, 553-569 (2014); http://dx.doi.org/10.1039/C3FD00116D
      
253. N. Gerken, S. Klumpp, A.A. Sorokin, K. Tiedtke, M. Richter, V. Bürk, K. Mertens, P. Juranić, and M. Martins,
     Time-Dependent Multiphoton Ionization of Xenon in the Soft-X-Ray Regime,
     Phys. Rev. Lett. 112, 213002 (2014); http://dx.doi.org/10.1103/PhysRevLett.112.213002
      
254. L. Schroedter, M. Müller, A. Kickermann, A. Przystawik, S. Toleikis, M. Adolph, L. Flückiger, T. Gorkhover, L. Nösel, M. Krikunova, T. Oelze, Y. Ovcharenko, D. Rupp, M. Sauppe, D. Wolter, S. Schorb, C. Bostedt, T. Möller, and T. Laarmann,
     Hidden Charge States in Soft-X-Ray Laser-Produced Nanoplasmas Revealed by Fluorescence Spectroscopy,
     Phys. Rev. Lett. 112, 183401 (2014); http://dx.doi.org/10.1103/PhysRevLett.112.183401
      
255. U. Zastrau, P. Sperling, M. Harmand, A. Becker, T. Bornath, R. Bredow, S. Dziarzhytski, T. Fennel, L.B. Fletcher, E. Förster, S. Göde, G. Gregori, V. Hilbert, D. Hochhaus, B. Holst, T. Laarmann, H.J. Lee, T. Ma, J.P. Mithen, R. Mitzner, C.D. Murphy, M. Nakatsutsumi, P. Neumayer, A. Przystawik, S. Roling, M. Schulz, B. Siemer, S. Skruszewicz, J. Tiggesbäumker, S. Toleikis, T. Tschentscher, T. White, M. Wöstmann, H. Zacharias, T. Döppner, S.H. Glenzer, and R. Redmer,
     Resolving Ultrafast Heating of Dense Cryogenic Hydrogen,
     Phys. Rev. Lett. 112, 105002 (2014); http://dx.doi.org/10.1103/PhysRevLett.112.105002
      
256. A. Fognini, T.U. Michlmayr, G. Salvatella, C. Wetli, U. Ramsperger, T. Bähler, F. Sorgenfrei, M. Beye, A. Eschenlohr, N. Pontius, C. Stamm, F. Hieke, M. Dell’Angela, S. de Jong, R. Kukreja, N. Gerasimova, V. Rybnikov, A. Al-Shemmary, H. Redlin, J. Raabe, A. Föhlisch, H.A. Dürr, W. Wurth, D. Pescia, A. Vaterlaus, and Y. Acremann,
     Ultrafast reduction of the total magnetization in iron,
     Appl. Phys. Lett. 104, 032402 (2014); http://dx.doi.org/10.1063/1.4862476
      
257. Theophilos Maltezopoulos, Manuel Mittenzwey, Armin Azima, Jörn Bödewadt, Hatem Dachraoui, Marie Rehders, Christoph Lechner, Michael Schulz, Marek Wieland, Tim Laarmann, Jörg Roßbach, Markus Drescher,
     A high-harmonic generation source for seeding a free-electron laser at 38 nm,
     Appl. Phys. B 115, 45-54 (2014); http://dx.doi.org/10.1007/s00340-013-5571-6
     published online Aug. 2013
      
258. Nikola Stojanovic and Markus Drescher,
     Accelerator- and laser-based sources of high-field terahertz pulses,
     J. Phys. B: At. Mol. Opt. Phys. 46, 192001 (2013); http://dx.doi.org/10.1088/0953-4075/46/19/192001
      
259. L. Müller, S. Schleitzer, C. Gutt, B. Pfau, S. Schaffert, J. Geilhufe, C. von Korff Schmising, M. Schneider, C.M. Günther, F. Büttner, F. Capotondi, E. Pedersoli, S. Düsterer, H. Redlin, A. Al-Shemmary, R. Treusch, J. Bach, R. Frömter, B. Vodungbo, J. Gautier, P. Zeitoun, H. Popescu, V. Lopez-Flores, N. Beaulieu, F. Sirotti, N. Jaouen, G. Malinowski, B. Tudu, K. Li, J. Lüning, H.P. Oepen, M. Kiskinova, S. Eisebitt, and G. Grübel,
     Ultrafast Dynamics of Magnetic Domain Structures Probed by Coherent Free-Electron Laser Light,
     Synch. Rad. News 26, Issue 6, 27-32 (2013) *; http://dx.doi.org/10.1080/08940886.2013.850384
      
260. C. Domesle, S. Dziarzhytski, N. Guerassimova, L.S. Harbo, O. Heber, L. Lammich, B. Jordon-Thaden, R. Treusch, A. Wolf, and H.B. Pedersen,
     Photoionization and fragmentation of H₃O⁺ under XUV irradiation,
     Phys. Rev. A 88, 043405 (2013), http://dx.doi.org/10.1103/PhysRevA.88.043405
      
261. S. Ackermann, A. Azima, S. Bajt, J. Bödewadt, F. Curbis, H. Dachraoui, H.Delsim-Hashemi, M. Drescher, S. Düsterer, B. Faatz, M. Felber, J. Feldhaus, E. Hass, U. Hipp, K. Honkavaara, R. Ischebeck, S.Khan, T. Laarmann, C. Lechner, Th. Maltezopoulos, V. Miltchev, M. Mittenzwey, M. Rehders, J. Rönsch-Schulenburg, J. Rossbach, H. Schlarb, S. Schreiber, L. Schroedter, M. Schulz, S. Schulz, R.Tarkeshian, M. Tischer, V. Wacker, and M. Wieland,
     Generation of Coherent 19- and 38-nm Radiation at a Free-Electron Laser Directly Seeded at 38 nm,
     Phys. Rev. Lett. 111, 114801 (2013); http://dx.doi.org/10.1103/PhysRevLett.111.114801
      
262. K. Schnorr, A. Senftleben, M. Kurka, A. Rudenko, L. Foucar, G. Schmid, A.Broska, T. Pfeifer, K. Meyer, D. Anielski, R. Boll, D. Rolles, M. Kübel, M.F. Kling, Y.H. Jiang, S. Mondal, T. Tachibana, K. Ueda, T. Marchenko, M. Simon, G. Brenner, R. Treusch, S. Scheit, V. Averbukh, J. Ullrich, C.D. Schröter, and R. Moshammer,
     Time-Resolved Measurement of Interatomic Coulombic Decay in Ne₂,
     Phys. Rev. Lett. 111, 093402 (2013); http://dx.doi.org/10.1103/PhysRevLett.111.093402
      
263. M. Beye, S. Schreck, F. Sorgenfrei, C. Trabant, N. Pontius, C. Schüßler-Langeheine, W. Wurth & A. Föhlisch,
     Stimulated X-ray emission for materials science,
     Nature 501, 191-194 (2013); http://dx.doi.org/10.1038/nature12449
      
264. J. Feldhaus, M. Krikunova, M. Meyer, Th. Möller, R. Moshammer, A. Rudenko, Th. Tschentscher and J. Ullrich,
     AMO science at the FLASH and European XFEL free-electron laser facilities,
     J. Phys. B: At. Mol. Opt. Phys. 46, Special Issue: Frontiers of FEL Science, 164002 (2013); http://dx.doi.org/10.1088/0953-4075/46/16/164002
      
265. M. Wöstmann, R. Mitzner, T. Noll, S. Roling, B. Siemer, F. Siewert, S. Eppenhoff, F. Wahlert and H. Zacharias,
     The XUV split-and-delay unit at beamline BL2 at FLASH,
     J. Phys. B: At. Mol. Opt. Phys. 46, Special Issue: Frontiers of FEL Science, 164005 (2013); http://dx.doi.org/10.1088/0953-4075/46/16/164005
      
266. R. Guichard, M. Richter, J.-M. Rost, U. Saalmann, A.A. Sorokin and K. Tiedtke,
     Multiple ionization of neon by soft x-rays at ultrahigh intensity,
     J. Phys. B: At. Mol. Opt. Phys. 46, Special Issue: Frontiers of FEL Science, 164025 (2013); http://dx.doi.org/10.1088/0953-4075/46/16/164025
      
267. S. Düsterer, L. Rading, P. Johnsson, A. Rouzée, A. Hundertmark, M.J.J. Vrakking, P. Radcliffe, M. Meyer, A.K. Kazansky and N.M. Kabachnik,
     Interference in the angular distribution of photoelectrons in superimposed XUV and optical laser fields,
     J. Phys. B: At. Mol. Opt. Phys. 46, Special Issue: Frontiers of FEL Science, 164026 (2013); http://dx.doi.org/10.1088/0953-4075/46/16/164026
      
268. Y.H. Jiang, A. Senftleben, M. Kurka, A. Rudenko, L. Foucar, O. Herrwerth, M.F. Kling, M. Lezius, J.V. Tilborg, A. Belkacem, K. Ueda, D. Rolles, R. Treusch, Y.Z. Zhang, Y.F. Liu, C.D. Schröter, J. Ullrich and R.Moshammer,
     Ultrafast dynamics in acetylene clocked in a femtosecond XUV stopwatch,
     J. Phys. B: At. Mol. Opt. Phys. 46, Special Issue: Frontiers of FEL Science, 164027 (2013); http://dx.doi.org/10.1088/0953-4075/46/16/164027
      
269. O. Kornilov, M. Eckstein, M. Rosenblatt, C.P. Schulz, K. Motomura, A. Rouzée, J. Klei, L. Foucar, M. Siano, A. Lübcke, F. Schapper, P. Johnsson, D.M.P. Holland, T. Schlathölter, T. Marchenko, S. Düsterer, K. Ueda, M.J.J. Vrakking and L.J. Frasinski,
     Coulomb explosion of diatomic molecules in intense XUV fields mapped by partial covariance,
     J. Phys. B: At. Mol. Opt. Phys. 46, Special Issue: Frontiers of FEL Science, 164028 (2013); http://dx.doi.org/10.1088/0953-4075/46/16/164028
      
270. A. Rouzée, P. Johnsson, L. Rading, A. Hundertmark, W. Siu, Y. Huismans, S. Düsterer, H. Redlin, F. Tavella, N. Stojanovic, A. Al-Shemmary, F. Lépine, D.M.P. Holland, T. Schlathölter, R. Hoekstra, H. Fukuzawa, K. Ueda and M.J.J. Vrakking
     Towards imaging ultrafast molecular dynamics using FELs,
     J. Phys. B: At. Mol. Opt. Phys. 46, Special Issue: Frontiers of FEL Science, 164029 (2013); http://dx.doi.org/10.1088/0953-4075/46/16/164029
      
271. J.Gaudin, N.Medvedev, J.Chalupský, T.Burian, S.Dastjani-Farahani, V. Hájková, M. Harmand, H.O. Jeschke, L. Juha, M. Jurek, D.Klinger, J.Krzywinski, R.A. Loch, S.Moeller, M. Nagasono, C.Ozkan, K. Saksl, H. Sinn, R. Sobierajski, P. Sovák, S.Toleikis, K.Tiedtke, M.Toufarová, T.Tschentscher, V.Vorlíček, L. Vyšín, H.Wabnitz, B. Ziaja,
     Photon energy dependence of graphitization threshold for diamond irradiated with an intense XUV FEL pulse,
     Phys. Rev. B 88, 060101 (R) (2013); http://dx.doi.org/10.1103/PhysRevB.88.060101
      
272. A. Singer, U. Lorenz, F. Sorgenfrei, N. Gerasimova, J. Gulden, O.M. Yefanov, R.P. Kurta, A. Shabalin, R. Dronyak, R. Treusch, V. Kocharyan, E. Weckert, W. Wurth, and I.A. Vartanyants,
     Hanbury Brown and Twiss interferometry at a free-electron laser,
     Phys. Rev. Lett. 111, 034802 (2013); http://dx.doi.org/10.1103/PhysRevLett.111.034802
     Erratum: http://dx.doi.org/10.1103/PhysRevLett.117.239903
      
273. Anton Barty, Jochen Küpper, and Henry N.Chapman,
     Molecular Imaging Using X-Ray Free-Electron Lasers,
     Annu. Rev. Phys. Chem. 64, 415-435 (2013); http://dx.doi.org/10.1146/annurev-physchem-032511-143708
      
274. W. Wierzchowski, K. Wieteska, D. Klinger, R. Sobierajski, J.B. Pelka, D. Żymierska, T. Balcer, J. Chalupský, J. Gaudin, V. Hájková, T. Burian, A.J. Gleeson, L. Juha, H. Sinn, D. Sobota, K. Tiedtke, S. Toleikis, T. Tschentscher, L. Vyšín, H. Wabnitz, C. Paulmann,
     Investigation of damage induced by intense femtosecond XUV pulses in silicon crystals by means of white beam synchrotron section topography,
     Rad. Phys. Chem. 93, 99-103 (2013); http://dx.doi.org/10.1016/j.radphyschem.2013.04.025
      
275. L. Müller, C. Gutt, B. Pfau, S. Schaffert, J. Geilhufe, F. Büttner, J. Mohanty, S. Flewett, R. Treusch, S. Düsterer, H. Redlin, A. Al-Shemmary, M. Hille, A. Kobs, R. Frömter, H.P. Oepen, B. Ziaja, N. Medvedev, S.-K. Son, R. Thiele, R. Santra, B. Vodungbo, J. Lüning, S. Eisebitt, and G. Grübel,
     Breakdown of the X-ray Resonant Magnetic Scattering Signal during Intense Pulses of Extreme Ultraviolet Free-Electron-Laser Radiation,
     Phys. Rev. Lett. 110, 234801 (2013); http://dx.doi.org/10.1103/PhysRevLett.110.234801
      
276. D.D. Mai, J. Hallmann, T. Reusch, M. Osterhoff, S. Düsterer, R. Treusch, A. Singer, M. Beckers, T. Gorniak, T. Senkbeil, R. Dronyak, J. Gulden, O.M. Yefanov, A. Al-Shemmary, A. Rosenhahn, A.P. Mancuso, I.A. Vartanyants, and T. Salditt,
     Single pulse coherence measurements in the water window at the free-electron laser FLASH,
     Opt. Express 21, 13005-13017 (2013); http://dx.doi.org/10.1364/OE.21.013005
      
277. R. Riedel, A. Al-Shemmary, M. Gensch, T. Golz, M. Harmand, N. Medvedev, M.J. Prandolini, K. Sokolowski-Tinten, S. Toleikis, U. Wegner, B. Ziaja, N. Stojanovic and F. Tavella,
     Single-shot pulse duration monitor for extreme ultraviolet and X-ray free-electron lasers,
     Nature Communications 4, 1731 (2013); http://dx.doi.org/10.1038/ncomms2754
      
278. A. Bartnik, R. Fedosejevs, P. Wachulak, H. Fiedorowicz, C. Serbanescu, E.G. Saiz, D. Riley, S. Toleikis and D. Neely,
     Photo-ionized neon plasmas induced by radiation pulses of a laser-plasma EUV source and a free electron laser FLASH,
     Laser and Particle Beams 31, 195-201 (2013); http://dx.doi.org/10.1017/S0263034613000050
      
279. Robert Moshammer, Artem Rudenko, Joachim Ullrich,
     Moleküle im Blitzlicht des Freie-Elektronen-Lasers FLASH − Chemische Reaktionen in Superzeitlupe,
     Physik in unserer Zeit 44, 20-27 (2013), Wiley-VCH, Weinheim *; http://dx.doi.org/10.1002/piuz.201201313
      
280. H.B. Pedersen, C. Domesle, L. Lammich, S. Dziarzhytski, N. Guerassimova, R. Treusch, L.S. Harbo, O. Heber, B. Jordon-Thaden, T. Arion, M. Förstel, M. Stier, U. Hergenhahn, and A. Wolf,
     Photolysis of water-radical ions H₂O⁺ in the xuv: Fragmentation through dicationic states,
     Phys. Rev. A 87, 013402 (2013); http://dx.doi.org/10.1103/PhysRevA.87.013402
      
281. I. Grguraš, A.R. Maier, C. Behrens, T. Mazza, T J. Kelly, P. Radcliffe, S. Düsterer, A.K. Kazansky,   N.M. Kabachnik,  Th. Tschentscher,   J.T. Costello,   M. Meyer, M.C. Hoffmann, H. Schlarb and A.L. Cavalieri,
     Ultrafast X-ray pulse characterization at free-electron lasers,
     Nature Photonics 6, 852-857 (2012); http://dx.doi.org/10.1038/NPHOTON.2012.276
      
282. W. Quevedo, G. Busse, J. Hallmann, R. Moré, M. Petri, F. Krasniqi, A. Rudenko, T. Tschentscher, N. Stojanovic, S. Düsterer, R. Treusch, M. Tolkiehn, S. Techert, and I. Rajkovic,
     Ultrafast time dynamics studies of periodic lattices with free electron laser radiation,
     J. Appl. Phys. 112, 093519 (2012); http://dx.doi.org/10.1063/1.4764918
      
283. Maria Krikunova, Theophilos Maltezopoulos, Philipp Wessels, Moritz Schlie, Armin Azima, Thomas Gaumnitz, Thomas Gebert, Marek Wieland, and Markus Drescher,
     Strong-field ionization of molecular iodine traced with XUV pulses from a free-electron laser,
     Phys. Rev. A 86, 043430 (2012); http://dx.doi.org/10.1103/PhysRevA.86.043430
      
284. B. Pfau, S. Schaffert, L. Müller, C. Gutt, A. Al-Shemmary, F. Büttner, R. Delaunay, S. Düsterer, S. Flewett, R. Frömter, J. Geilhufe, E. Guehrs, C.M. Günther, R. Hawaldar, M. Hille, N. Jaouen, A. Kobs, K. Li, J. Mohanty, H. Redlin, W.F. Schlotter, D. Stickler, R. Treusch, B. Vodungbo, M. Kläui, H.-P. Oepen, J. Lüning, G. Grübel, S. Eisebitt,
     Ultrafast Optical Demagnetization manipulates Nanoscale Spin Structure in Domain Walls,
     Nat. Commun. 3:1100 (2012); http://dx.doi.org/10.1038/ncomms2108
      
285. B. Iwan, J. Andreasson, M. Bergh, S. Schorb, H. Thomas, D. Rupp, T. Gorkhover, M. Adolph, T. Möller, C. Bostedt, J. Hajdu, and N. Tîmneanu,
     Explosion, ion acceleration, and molecular fragmentation of methane clusters in the pulsed beam of a free-electron laser,
     Phys. Rev. A 86, 033201 (2012); http://dx.doi.org/10.1103/PhysRevA.86.033201
      
286. R. Dronyak, J. Gulden, O.M. Yefanov, A. Singer, T. Gorniak, T. Senkbeil, J.-M. Meijer, A. Al-Shemmary, J. Hallmann, D.D. Mai, T. Reusch, D. Dzhigaev, R.P. Kurta, U. Lorenz, A.V. Petukhov, S. Duesterer, R. Treusch, M.N. Strikhanov, E. Weckert, A.P. Mancuso, T. Salditt, A. Rosenhahn, and I.A. Vartanyants,
     Dynamics of colloidal crystals studied by pump-probe experiments at FLASH,
     Phys. Rev. B 86, 064303 (2012); http://dx.doi.org/10.1103/PhysRevB.86.064303
      
287. L.S. Harbo, A. Becker, S. Dziarzhytski, C. Domesle, N. Guerassimova, A. Wolf, and H.B. Pedersen,
     Single and double electron photodetachment from the oxygen anion at 41.7 nm,
     Phys. Rev. A 86, 023409 (2012); http://dx.doi.org/10.1103/PhysRevA.86.023409
      
288. M. Harmand, C.D. Murphy, C.R.D. Brown, M. Cammarata, T. Döppner, S. Düsterer, D. Fritz, E. Förster, E. Galtier, J. Gaudin, S.H. Glenzer, S. Göde, G. Gregori, V. Hilbert, D. Hochhaus, T. Laarmann, H.J. Lee, H. Lemke, K.-H. Meiwes-Broer, A. Moinard, P. Neumayer, A. Przystawik, H. Redlin, M. Schulz, S. Skruszewicz, F. Tavella, T. Tschentscher, T. White, U. Zastrau and S.Toleikis,
     Plasma switch as a temporal overlap tool for pump-probe experiments at FEL facilities,
     JINST 7, P08007 (2012); http://dx.doi.org/10.1088/1748-0221/7/08/P08007
      
289. Jérôme Gaudin, Cigdem Ozkan, Jaromír Chalupský, Saša Bajt, Tomáš Burian, Luděk Vyšín, Nicola Coppola, Shafagh Dastjani Farahani, Henry N. Chapman, Germano Galasso, Věra Hájková, Marion Harmand, Libor Juha, Marek Jurek, Rolf A. Loch, Stefan Möller, Mitsuru Nagasono, Michael Störmer, Harald Sinn, Karel Saksl, Ryszard Sobierajski, Joachim Schulz, Pavol Sovak, Sven Toleikis, Kai Tiedtke, Thomas Tschentscher, and Jacek Krzywinski,
     Investigating the interaction of x-ray free electron laser radiation with grating structure,
     Opt. Lett. 37, 3033-3035 (2012); http://dx.doi.org/10.1364/OL.37.003033
      
290. J. Bahn, P. Oelßner, M. Köther, C. Braun, V. Senz, S. Palutke, M. Martins, E. Rühl, G. Ganteför, T. Möller, B. von Issendorff, D. Bauer, J. Tiggesbäumker and K.-H.Meiwes-Broer,
     Pb 4f photoelectron spectroscopy on mass-selected anionic lead clusters at FLASH,
     New J. Phys. 14, 075008 (2012); http://dx.doi.org/10.1088/1367-2630/14/7/075008
      
291. M. Magrakvelidze, O. Herrwerth, Y.H. Jiang, A. Rudenko, M. Kurka, L. Foucar, K.U. Kühnel, M. Kübel, Nora G. Johnson, C.D. Schröter, S. Düsterer, R. Treusch, M. Lezius, I. Ben-Itzhak, R. Moshammer, J. Ullrich, M.F. Kling, and U. Thumm,
     Tracing nuclear-wave-packet dynamics in singly and doubly charged states of N₂ and O₂ with XUV-pump−XUV-probe experiments,
     Phys. Rev. A 86, 013415 (2012); http://dx.doi.org/10.1103/PhysRevA.86.013415
      
292. A. Singer, F. Sorgenfrei, A.P. Mancuso, N. Gerasimova, O.M. Yefanov, J. Gulden, T. Gorniak, T. Senkbeil, A. Sakdinawat, Y. Liu, D. Atwood, S. Dziarzhytski, D.D. Mai, R. Treusch, E. Weckert, T. Salditt, A. Rosenhahn, W. Wurth and I.A. Vartanyants,
     Spatial and temporal coherence properties of single free-electron laser pulses,
     Opt. Express 20, 17480-17495 (2012); http://dx.doi.org/10.1364/OE.20.017480
      
293. T. Mazza, K.G. Papamihail, P. Radcliffe, W.B. Li, T.J. Kelly, J.T. Costello, S. Düsterer, P. Lambropoulos and M. Meyer,
     Controlling core hole relaxation dynamics via intense optical fields,
     J. Phys. B: At. Mol. Opt. Phys. 45, 141001 (2012); http://dx.doi.org/10.1088/0953-4075/45/14/141001
      
294. B. Schütte, S. Bauch, U. Frühling, M. Wieland, M. Gensch, E. Plönjes, T. Gaumnitz, A. Azima, M. Bonitz, and M. Drescher,
     Evidence for Chirped Auger-Electron Emission,
     Phys. Rev. Lett. 108, 253003 (2012); http://dx.doi.org/10.1103/PhysRevLett.108.253003
      
295. D. Rupp, M. Adolph, T. Gorkhover, S. Schorb, D. Wolter, R. Hartmann, N. Kimmel, C. Reich, T. Feigl, A.R.B. de Castro, R. Treusch, L. Strüder, T. Möller and C.Bostedt,
     Identification of twinned gas phase clusters by single-shot scattering with intense soft x-ray pulses,
     New J. Phys. 14, 055016 (2012); http://dx.doi.org/10.1088/1367-2630/14/5/055016
      
296. M Krikunova, M Adolph, T Gorkhover, D Rupp, S Schorb, C Bostedt, S Roling, B Siemer, R Mitzner, H Zacharias and T Möller,
     Ionization dynamics in expanding clusters studied by XUV pump−probe spectroscopy,
     J. Phys. B: At. Mol. Opt. Phys. 45, 105101 (2012); http://dx.doi.org/10.1088/0953-4075/45/10/105101
      
297. A. Przystawik, A. Kickermann, A. Al-Shemmary, S. Düsterer, A.M. Ellis, K. von Haeften, M. Harmand, S. Ramakrishna, H. Redlin, L. Schroedter, M. Schulz, T. Seideman, N. Stojanovic, J. Szekely, F. Tavella, S. Toleikis, and T. Laarmann,
     Generation of the simplest rotational wave packet in a diatomic molecule: Tracing a two-level superposition in the time domain,
     Phys. Rev. A 85, 052503 (2012); http://dx.doi.org/10.1103/PhysRevA.85.052503
      
298. P. Radcliffe, M. Arbeiter. W.B. Li, S. Düsterer, H. Redlin, P. Hayden, P. Hough, V. Richardson, J.T. Costello, T. Fennel and M. Meyer,
     Atomic photoionization in combined intense XUV free-electron and infrared laser fields,
     New J. Phys. 14, 043008 (2012); http://dx.doi.org/10.1088/1367-2630/14/4/043008
      
299. V. Richardson, W.B. Li, T.J. Kelly, J.T. Costello, L.A.A. Nikolopoulos, S. Düsterer, D. Cubaynes and M. Meyer,
     Dichroism in the above-threshold two-colour photoionization of singly charged neon,
     J. Phys. B: At. Mol. Opt. Phys. 45, 085601 (2012); http://dx.doi.org/10.1088/0953-4075/45/8/085601
      
300. U. Zastrau, T. Burian, J. Chalupsky, T. Döppner, T.W.J. Dzelzainis, R.R. Fäustlin, C. Fortmann, E. Galtier, S.H. Glenzer, G. Gregori, L. Juha, H.J. Lee, R.W. Lee, C.L.S. Lewis, N. Medvedev, B. Nagler, A.J. Nelson, D. Riley, F.B. Rosmej, S. Toleikis, T. Tschentscher, I. Uschmann, S.M. Vinko, J.S. Wark, T. Whitcher, and E. Förster,
     XUV spectroscopic characterization of warm dense aluminum plasmas generated by the free-electron-laser FLASH,
     Laser and Particle Beams 30, 45-56 (2012); http://dx.doi.org/10.1017/S026303461100067X
      
301. Kristina Meyer, Christian Ott, Philipp Raith, Andreas Kaldun, Yuhai Jiang, Arne Senftleben, Moritz Kurka, Robert Moshammer, Joachim Ullrich, and Thomas Pfeifer,
     Noisy Optical Pulses Enhance the Temporal Resolution of Pump-Probe Spectroscopy,
     Phys. Rev. Lett. 108, 098302 (2012); http://dx.doi.org/10.1103/PhysRevLett.108.098302
      
302. C. Bostedt, E. Eremina, D. Rupp, M. Adolph, H. Thomas, M. Hoener, T. Möller, A.R.B. de Castro, J. Tiggesbäumker, K.-H. Meiwes-Broer, T. Laarmann, H. Wabnitz, E. Plönjes, R. Treusch, and J.R. Schneider,
     Ultrafast x-ray scattering of xenon nanoparticles: Imaging transient states of matter,
     Phys. Rev. Lett. 108, 093401 (2012); http://dx.doi.org/10.1103/PhysRevLett.108.093401
      
303. Joachim Ullrich, Artem Rudenko, and Robert Moshammer,
     Free-Electron Lasers: New Avenues in Molecular Physics and Photochemistry,
     Annu. Rev. Phys. Chem. 63, 635-660 (2012); http://dx.doi.org/10.1146/annurev-physchem-032511-143720
      
304. S. Hellmann, C. Sohrt, M. Beye, T. Rohwer, F. Sorgenfrei, M. Marczynski-Bühlow, M. Kalläne, H. Redlin, F. Hennies, M. Bauer, A. Föhlisch, L. Kipp, W. Wurth and K. Rossnagel,
     Time-resolved x-ray photoelectron spectroscopy at FLASH,
     New J. Phys. 14, 013062 (2012); http://dx.doi.org/10.1088/1367-2630/14/1/013062
      
305. N. Medvedev, U. Zastrau, E. Förster, D.O. Gericke, and B. Rethfeld,
     Short-Time Electron Dynamics in Aluminum Excited by Femtosecond Extreme Ultraviolet Radiation,
     Phys. Rev. Lett. 107, 165003 (2011); http://dx.doi.org/10.1103/PhysRevLett.107.165003
      
306. B. Iwan, J. Andreasson, A. Andrejczuk, E. Abreu, M. Bergh, C. Caleman, A.J. Nelson, S. Bajt, J. Chalupsky, H.N. Chapman, R.R. Fäustlin, V. Hajkova, P.A. Heimann, B. Hjörvarsson, L. Juha, D. Klinger, J. Krzywinski, B. Nagler, G.K.Pálsson, W. Singer, M.M. Seibert, R. Sobierajski, S. Toleikis, T. Tschentscher, S.M. Vinko, R.W. Lee, J. Hajdu, N. Tîmneanu,
     TOF-OFF: A method for determining focal positions in tightly focused free-electron laser experiments by measurement of ejected ions,
     High Energy Density Phys. 7, 336-342 (2011); http://dx.doi.org/10.1016/j.hedp.2011.06.008
      
307. S. Roling, B. Siemer, M. Wöstmann, H. Zacharias, R. Mitzner, A. Singer, K. Tiedtke, and I.A. Vartanyants,
     Temporal and spatial coherence properties of free-electron-laser pulses in the extreme
     ultraviolet regime,
     Phys. Rev. ST Accel. Beams 14, 080701 (2011); http://dx.doi.org/10.1103/PhysRevSTAB.14.080701
      
308. Björn Siemer, Tim Hoger, Marco Rutkowski, Stefan Düsterer, and Helmut Zacharias,
     XUV Free-Electron Laser Desorption of NO from Graphite (0001),
     J. Phys. Chem. A 115, 7356-7361 (2011); http://dx.doi.org/10.1021/jp2011793
      
309. W. Wierzchowski, K. Wieteska, T. Balcer, D. Klinger, R. Sobierajski, D. Żymierska, J. Chalupský, V. Hájková, T. Burian, A.J. Gleeson, L. Juha, K. Tiedtke, S. Toleikis, L. Vyśın, H. Wabnitz and J. Gaudin,
     X-ray topographic investigation of the deformation field around spots irradiated by FLASH single pulses,
     Radiation Physics and Chemistry 80, 1036-1040 (2011); http://dx.doi.org/10.1016/j.radphyschem.2011.02.034
      
310. T. Gorniak, R. Heine, A.P. Mancuso, F. Staier, C. Christophis, M.E. Pettitt, A. Sakdinawat, R. Treusch, N. Guerassimova, J. Feldhaus, C. Gutt, G. Grübel, S. Eisebitt, A. Beyer, A. Gölzhäuser, E. Weckert, M. Grunze, I.A. Vartanyants, and A. Rosenhahn,
     X-ray holographic microscopy with zone plates applied to biological samples in the water window using 3rd harmonicradiation from the free-electron laser FLASH,
     Opt. Express 19, 11059-11070 (2011); http://dx.doi.org/10.1364/OE.19.011059
      
311. N. Pontius, T. Kachel, C. Schüßler-Langeheine, W.F. Schlotter, M. Beye, F. Sorgenfrei, C.F. Chang, A. Föhlisch, W. Wurth, P. Metcalf, I. Leonov, A. Yaresko, N. Stojanovic, M. Berglund, N. Guerassimova, S. Düsterer, H. Redlin, and H.A. Dürr,
     Time-resolved resonant soft x-ray diffraction with free-electron lasers: Femtosecond dynamics across the Verwey transition in magnetite,
     Appl. Phys. Lett. 98, 182504 (2011); http://dx.doi.org/10.1063/1.3584855
      
312. E. Galtier, F.B. Rosmej, T. Dzelzainis, D. Riley, F.Y. Khattak, P. Heimann, R.W. Lee, A.J. Nelson, S.M. Vinko, T. Whitcher, J.S. Wark, T. Tschentscher, S. Toleikis, R.R. Fäustlin, R. Sobierajski, M. Jurek, L. Juha, J. Chalupský, V. Hajkova, M. Kozlova, J. Krzywinski, and B. Nagler,
     Decay of crystalline order and equilibration during solid-to-plasma transition induced by 20-fs microfocused 92 eV Free Electron Laser pulses,
     Phys. Rev. Lett. 106, 164801 (2011); http://dx.doi.org/10.1103/PhysRevLett.106.164801
      
313. A. Rouzée, P. Johnsson, E.V. Gryzlova, H. Fukuzawa, A. Yamada,W. Siu, Y. Huismans, E. Louis, F. Bijkerk, D.M.P. Holland, A.N. Grum-Grzhimailo, N.M. Kabachnik, M.J.J. Vrakking, and K. Ueda,
     Angle-resolved photoelectron spectroscopy of sequential three-photon triple ionization of neon at 90.5 eV photon energy,
     Phys. Rev. A 83, 031401(R) (2011); http://dx.doi.org/10.1103/PhysRevA.83.031401
      
314. E. Galtier, F.B. Rosmej, O. Renner, L. Juha, J. Chalupsky, J.-C. Gauthier, S. White, D. Riley, S. Vinko, T. Witcher, J. Wark, B. Nagler, R.W. Lee, A.J. Nelson, S.Toleikis,
     Observation of K-Shell Soft X Ray Emission of Nitrogen Irradiated by XUV-Free Electron Laser FLASH at Intensities Greater than 10¹⁶W/cm²,
     Contributions to Plasma Physics 51, 284-287 (2011); http://dx.doi.org/10.1002/ctpp.201000045
      
315. J. Andreasson, B. Iwan, A. Andrejczuk, E. Abreu, M. Bergh, C. Caleman, A.J. Nelson, S. Bajt, J. Chalupsky, H.N. Chapman, R.R. Fäustlin, V. Hajkova, P.A. Heimann, B. Hjörvarsson, L. Juha, D. Klinger, J. Krzywinski, B. Nagler, G.K. Pálsson, W. Singer, M.M. Seibert, R. Sobierajski, S. Toleikis, T. Tschentscher, S.M. Vinko, R.W. Lee, J. Hajdu, and N.Tîmneanu,
     Saturated ablation in metal hydrides and acceleration of protons and deuterons to keV energies with a soft-x-ray laser,
     Phys. Rev. E 83, 016403 (2011); http://dx.doi.org/10.1103/PhysRevE.83.016403
      
316. F. Tavella, N. Stojanovic, G. Geloni and M. Gensch,
     Few-femtosecond timing at fourth-generation X-ray light sources,
     Nature Photonics 5, 162-165 (2011), http://dx.doi.org/10.1038/nphoton.2010.311
      
317. Maria Krikunova, Theophilos Maltezopoulos, Philipp Wessels, Moritz Schlie, Armin Azima, Marek Wieland, and Markus Drescher,
     Ultrafast photofragmentation dynamics of molecular iodine driven with timed XUV and near-infrared light pulses,
     J. Chem. Phys. 134, 024313 (2011); http://dx.doi.org/10.1063/1.3528722
      
318. C.M. Günther, B. Pfau, R. Mitzner, B. Siemer, S. Roling, H. Zacharias, O. Kutz, I. Rudolph, D. Schondelmaier, R. Treusch and S. Eisebitt,
     Sequential Femtosecond X-Ray Imaging,
     Nature Photonics 5, 99-102 (2011); http://dx.doi.org/10.1038/nphoton.2010.287
      
319. R. Sobierajski, S. Bruijn, A.R. Khorsand, E. Louis, R.W.E. van de Kruijs, T. Burian, J. Chalupsky, J. Cihelka, A. Gleeson, J. Grzonka, E.M. Gullikson, V. Hajkova, S. Hau-Riege, L. Juha, M. Jurek, D. Klinger, J. Krzywinski, R. London, J.B. Pelka, T. Płociński, M. Rasiński, K. Tiedtke, S. Toleikis, L. Vysin, H. Wabnitz, and F. Bijkerk,
     Damage mechanisms of MoN/SiN multilayer optics for next-generation pulsed XUV light sources,
     Opt. Express 19, 193-205 (2011); http://dx.doi.org/10.1364/OE.19.000193
      
320. R. Thiele, P. Sperling, M. Chen, Th. Bornath, R.R. Fäustlin, C. Fortmann, S.H. Glenzer,W.-D. Kraeft, A. Pukhov, S.Toleikis, Th. Tschentscher, and R. Redmer,
     Thomson scattering on inhomogeneous targets,
     Phys. Rev. E 82, 056404 (2010); http://dx.doi.org/10.1103/PhysRevE.82.056404
      
321. Y.H. Jiang, A. Rudenko, O. Herrwerth, L. Foucar, M. Kurka, K.U. Kühnel, M. Lezius, M.F. Kling, J. van Tilborg, A. Belkacem, K. Ueda, S. Düsterer, R. Treusch, C.D. Schröter, R. Moshammer, and J. Ullrich,
     Ultrafast Extreme Ultraviolet Induced Isomerization of Acetylene Cations,
     Phys. Rev. Lett. 105, 263002 (2010); http://dx.doi.org/10.1103/PhysRevLett.105.263002
      
322. L. Lammich, C. Domesle, B. Jordon-Thaden, M. Förstel, O. Heber, S. Klumpp, M. Martins, N. Guerassimova, R. Treusch, J. Ullrich, U. Hergenhahn, H.B. Pedersen, and A. Wolf,
     Fragmentation pathways of H⁺(H2O)₂ after XUV photoionization,
     Phys. Rev. Lett. 105, 253003 (2010); http://dx.doi.org/10.1103/PhysRevLett.105.253003
      
323. B. Siemer, T. Olsen, T. Hoger, M. Rutkowski, C. Thewes, S. Düsterer, J. Schiøtz, H. Zacharias,
     Desorption of H atoms from graphite (0 0 0 1) using XUV free electron laser pulses,
     Chem. Phys. Lett. 500, 291-294 (2010); http://dx.doi.org/10.1016/j.cplett.2010.10.040
      
324. S. Hellmann, M. Beye, C. Sohrt, T. Rohwer, F. Sorgenfrei, H. Redlin, M. Kalläne, M. Marczynski-Bühlow, F. Hennies, M. Bauer, A. Föhlisch, L. Kipp, W. Wurth, and K.Rossnagel,
     Ultrafast Melting of a Charge-Density Wave in the Mott Insulator 1T-TaS₂,
     Phys. Rev. Lett. 105, 187401 (2010); http://dx.doi.org/10.1103/PhysRevLett.105.187401
      
325. Y.H. Jiang, T. Pfeifer, A. Rudenko, O. Herrwerth, L. Foucar, M. Kurka, K.U. Kühnel, M. Lezius, M.F. Kling, X. Liu, K. Ueda, S. Düsterer, R. Treusch, C.D. Schröter, R. Moshammer, and J. Ullrich,
     Temporal coherence effects in multiple ionization of N₂ via XUV pump-probe autocorrelation,
     Phys. Rev. A 82, 041403(R) (2010); http://dx.doi.org/10.1103/PhysRevA.82.041403
      
326. Thomas Pfeifer, Yuhai Jiang, Stefan Düsterer, Robert Moshammer, and Joachim Ullrich,
     Partial-coherence method to model experimental free-electron laser pulse statistics,
     Opt. Lett. 35, 3441-3443 (2010); http://dx.doi.org/10.1364/OL.35.003441
      
327. M.J. Bogan, S. Boutet, A. Barty, W.H. Benner, M. Frank, L. Lomb, R. Shoeman, D. Starodub, M.M. Seibert, S.P. Hau-Riege, B. Woods, P. Decorwin-Martin, S. Bajt, J. Schulz, U. Rohner, B. Iwan, N. Timneanu, S. Marchesini, I. Schlichting, J. Hajdu, and H.N. Chapman,
     Single-shot femtosecond x-ray diffraction from randomly oriented ellipsoidal nanoparticles,
     Phys. Rev. ST Accel. Beams 13, 094701 (2010); http://dx.doi.org/10.1103/PhysRevSTAB.13.094701
      
328. B. Pfau, C.M. Günther, S. Schaffert, R. Mitzner, B. Siemer, S. Roling, H. Zacharias, O. Kutz, I. Rudolph, R. Treusch and S. Eisebitt,
     Femtosecond pulse x-ray imaging with a large field of view,
     New J. Phys. 12, 095006 (2010); http://dx.doi.org/10.1088/1367-2630/12/9/095006
     (Focus issue on "X-ray sources with high coherence")
      
329. S. Toleikis, T. Bornath, T. Döppner, S. Düsterer, R. R. Fäustlin, E. Förster, C. Fortmann, S. H. Glenzer, S. Göde, G. Gregori, R. Irsig, T. Laarmann, H. J. Lee, B. Li, K.-H. Meiwes-Broer, J. Mithen, B. Nagler, A. Przystawik, P. Radcliffe, H. Redlin, R. Redmer, H. Reinholz, G. Röpke, F. Tavella, R. Thiele, J. Tiggesbäumker, I. Uschmann, S. M. Vinko, T. Whitcher, U. Zastrau, B. Ziaja and T. Tschentscher,
     Probing near-solid density plasmas using soft x-ray scattering,
     J. Phys. B: At. Mol. Opt. Phys. 43, 194017 (2010); http://dx.doi.org/10.1088/0953-4075/43/19/194017
      
330. I. A. Vartanyants, A. P. Mancuso, A. Singer, O. M. Yefanov and J. Gulden,
     Coherence measurements and coherent diffractive imaging at FLASH,
     J. Phys. B: At. Mol. Opt. Phys. 43, 194016 (2010); http://dx.doi.org/10.1088/0953-4075/43/19/194016
      
331. M. Marvin Seibert, Sébastien Boutet, Martin Svenda, Tomas Ekeberg, Filipe R. N. C. Maia, Michael J. Bogan, Nicusor Tîmneanu, Anton Barty, Stefan Hau-Riege, Carl Caleman, Matthias Frank, Henry Benner, Joanna Y. Lee, Stefano Marchesini, Joshua W Shaevitz, Daniel A. Fletcher, Sasa Bajt, Inger Andersson, Henry N. Chapman and Janos Hajdu,
     Femtosecond diffractive imaging of biological cells,
     J. Phys. B: At. Mol. Opt. Phys. 43, 194015 (2010); http://dx.doi.org/10.1088/0953-4075/43/19/194015
      
332. Anton Barty,
     Time-resolved imaging using x-ray free electron lasers,
     J. Phys. B: At. Mol. Opt. Phys. 43, 194014 (2010); http://dx.doi.org/10.1088/0953-4075/43/19/194014
      
333. Michael J. Bogan, Dmitri Starodub, Christina Y. Hampton and Raymond G. Sierra,
     Single-particle coherent diffractive imaging with a soft x-ray free electron laser: towards soot aerosol morphology,
     J. Phys. B: At. Mol. Opt. Phys. 43, 194013 (2010); http://dx.doi.org/10.1088/0953-4075/43/19/194013
      
334. Ulf Saalmann,
     Cluster nanoplasmas in strong FLASH pulses: formation, excitation and relaxation,
     J. Phys. B: At. Mol. Opt. Phys. 43, 194012 (2010); http://dx.doi.org/10.1088/0953-4075/43/19/194012
      
335. C. Bostedt, M. Adolph, E. Eremina, M. Hoener, D. Rupp, S. Schorb, H. Thomas, A. R. B. de Castro and T. Möller,
     Clusters in intense FLASH pulses: ultrafast ionization dynamics and electron emission studied with spectroscopic and scattering techniques,
     J. Phys. B: At. Mol. Opt. Phys. 43, 194011 (2010); http://dx.doi.org/10.1088/0953-4075/43/19/194011
      
336. Markus Drescher, Ulrike Frühling, Maria Krikunova, Theophilos Maltezopoulos and Marek Wieland,
     Time-diagnostics for improved dynamics experiments at XUV FELs,
     J. Phys. B: At. Mol. Opt. Phys. 43, 194010 (2010); http://dx.doi.org/10.1088/0953-4075/43/19/194010
      
337. J. Hallmann, S. Grübel, I. Rajkovic, W. Quevedo, G. Busse, M. Scholz, R. More, M. Petri and S. Techert,
     First steps towards probing chemical systems and dynamics with free-electron laser radiation - case studies at the FLASH facility,
     J. Phys. B: At. Mol. Opt. Phys. 43, 194009 (2010); http://dx.doi.org/10.1088/0953-4075/43/19/194009
      
338. S. W. Epp, J. R. Crespo López-Urrutia, M. C. Simon, T. Baumann, G. Brenner, R. Ginzel, N. Guerassimova, V. Mäckel, P. H. Mokler, B. L. Schmitt , H. Tawara and J. Ullrich,
     X-ray laser spectroscopy of highly charged ions at FLASH,
     J. Phys. B: At. Mol. Opt. Phys. 43, 194008 (2010); http://dx.doi.org/10.1088/0953-4075/43/19/194008
      
339. Andreas Wolf, Henrik B. Pedersen, Lutz Lammich, Brandon Jordon-Thaden, Simon Altevogt, Christian Domesle, Uwe Hergenhahn, Marko Förstel and Oded Heber,
     Soft-x-ray fragmentation studies of molecular ions,
     J. Phys. B: At. Mol. Opt. Phys. 43, 194007 (2010); http://dx.doi.org/10.1088/0953-4075/43/19/194007
      
340. M. Meyer, J. T. Costello, S. Düsterer, W. B. Li, and P. Radcliffe,
     Two-colour experiments in the gas phase,
     J. Phys. B: At. Mol. Opt. Phys. 43, 194006 (2010); http://dx.doi.org/10.1088/0953-4075/43/19/194006
      
341. M. Richter, S. V. Bobashev, A. A. Sorokin, and K. Tiedtke,
     Multiphoton ionization of atoms with soft x-ray pulses,
     J. Phys. B: At. Mol. Opt. Phys. 43, 194005 (2010); http://dx.doi.org/10.1088/0953-4075/43/19/194005
      
342. A. Rudenko, Y. H. Jiang, M. Kurka, K. U. Kühnel, L. Foucar, O. Herrwerth, M. Lezius, M. F. Kling, C. D. Schröter, R. Moshammer and J. Ullrich,
     Exploring few-photon, few-electron reactions at FLASH: from ion yield and momentum measurements to time-resolved and kinematically complete experiments,
     J. Phys. B: At. Mol. Opt. Phys. 43, 194004 (2010); http://dx.doi.org/10.1088/0953-4075/43/19/194004
      
343. A. Palacios, D. A. Horner, T. N. Rescigno and C. W. McCurdy,
     Two-photon double ionization of the helium atom by ultrashort pulses,
     J. Phys. B: At. Mol. Opt. Phys. 43, 194003 (2010); http://dx.doi.org/10.1088/0953-4075/43/19/194003
      
344. J. Feldhaus,
     FLASH - the first soft x-ray free electron laser (FEL) user facility,
     J. Phys. B: At. Mol. Opt. Phys. 43, 194002 (2010); http://dx.doi.org/10.1088/0953-4075/43/19/194002
      
345. Jochen R. Schneider,
     FLASH - from accelerator test facility to the first single-pass soft x-ray free-electron
     laser,
     J. Phys. B: At. Mol. Opt. Phys. 43, 194001 (2010); http://dx.doi.org/10.1088/0953-4075/43/19/194001
      
346. Martin Beye, Florian Sorgenfrei, William F. Schlotter, Wilfried Wurth, and Alexander Föhlisch,
     The liquid-liquid phase transition in silicon revealed by snapshots of valence electrons,
     PNAS 107(39), 16772-16776 (2010); www.pnas.org/cgi/doi/10.1073/pnas.1006499107
      
347. M. Meyer, D. Cubaynes, J. Dardis, P. Hayden, P. Hough, V. Richardson, E.T. Kennedy, J.T. Costello, S. Düsterer, W.B. Li, P. Radcliffe, H. Redlin, J. Feldhaus, S.I. Strakhova, E.V. Gryzlova, A.N. Grum-Grzhimailo, R. Taïeb, and A. Maquet,
     Two-color experiments in the gas phase at FLASH,
     J. Electron Spectrosc. Relat. Phenom. 181, 111-115 (2010); http://dx.doi.org/10.1016/j.elspec.2010.05.015
      
348. N. Berrah, J. Bozek, J.T. Costello, S. Düsterer, L. Fang, J. Feldhaus, H. Fukuzawa, M. Hoener, Y.H. Jiang, P. Johnsson, E.T. Kennedy, M. Meyer, R. Moshammer, P. Radcliffe, M. Richter, A. Rouzée, A. Rudenko, A.A. Sorokin, K. Tiedtke, K. Ueda, J. Ullrich, and M.J.J. Vrakking,
     Non-linear processes in the interaction of atoms and molecules with intense EUV and X-ray fields from SASE free electron lasers (FELs),
     Journal of Modern Optics 57, 1015-1040 (2010); http://dx.doi.org/10.1080/09500340.2010.487946
      
349. H. B. Pedersen, L. Lammich, C. Domesle, B. Jordon-Thaden, O. Heber, J. Ullrich, R. Treusch, N. Guerassimova, and A. Wolf,
     Experimental investigation of dissociation pathways of cooled HeH⁺ following valence electron excitation at 32 nm by intense free-electron-laser radiation,
     Phys. Rev. A 82, 023415 (2010); http://dx.doi.org/10.1103/PhysRevA.82.023415
      
350. Christoph Bostedt, Heiko Thomas, Matthias Hoener, Thomas Möller, Ulf Saalmann, Ionuţ Georgescu, Christian Gnodtke and Jan-Michael Rost,
     Fast electrons from multi-electron dynamics in xenon clusters induced by inner-shell ionization,
     New J. Phys. 12, 083004 (2010); http://dx.doi.org/10.1088/1367-2630/12/8/083004
      
351. M. Kurka, J. Feist, D.A. Horner, A. Rudenko, Y.H. Jiang, K.U. Kühnel, L. Foucar, T.N. Rescigno, C.W. McCurdy, R. Pazourek, S. Nagele, M. Schulz, O. Herrwerth, M. Lezius, M.F. Kling, M. Schöffler, A. Belkacem, S. Düsterer, R. Treusch, B.I. Schneider, L.A. Collins, J. Burgdörfer, C.D. Schröter, R. Moshammer, and J. Ullrich,
     Differential cross sections for non-sequential double ionization of He by 52 eV photons from FLASH,
     New J. Phys. 12, 073035 (2010); http://dx.doi.org/10.1088/1367-2630/12/7/073035
      
352. V. Richardson, J.T. Costello, D. Cubaynes, S. Düsterer, J. Feldhaus, H.W. van der Hart, P. Juranić, W.B. Li, M. Meyer, M. Richter, A.A. Sorokin, and K.Tiedke,
     Two-Photon Inner-Shell Ionization in the Extreme Ultraviolet,
     Phys. Rev. Lett. 105, 013001 (2010); http://dx.doi.org/10.1103/PhysRevLett.105.013001
      
353. N.D. Loh, M.J. Bogan, V. Elser, A. Barty, S. Boutet, S. Bajt, J. Hajdu, T. Ekeberg, F.R.N.C. Maia, J. Schulz, M.M. Seibert, B. Iwan, N.Timneanu, S.Marchesini, I. Schlichting, R.L. Shoeman, L. Lomb, M. Frank, M. Liang, and H.N. Chapman,
     Cryptotomography: Reconstructing 3D Fourier Intensities from Randomly Oriented Single-Shot Diffraction Patterns,
     Phys. Rev. Lett. 104, 225501 (2010); http://dx.doi.org/10.1103/PhysRevLett.104.225501
      
354. M. Meyer, D. Cubaynes, V. Richardson, J.T. Costello, P. Radcliffe, W.B. Li, S. Düsterer, S. Fritzsche, A. Mihelic, K.G. Papamihail, and P. Lambropoulos,
     Two-Photon Excitation and Relaxation of the 3d-4d Resonance in Atomic Kr,
     Phys. Rev. Lett. 104, 213001 (2010); http://dx.doi.org/10.1103/PhysRevLett.104.213001
      
355. S.M. Vinko, U. Zastrau, S. Mazevet, J. Andreasson, S. Bajt, T. Burian, J. Chalupsky, H.N. Chapman, J. Cihelka, D. Doria, T. Döppner, S. Düsterer, T. Dzelzainis, R.R. Fäustlin, C. Fortmann, E. Förster, E. Galtier, S.H. Glenzer, S. Göde, G. Gregori, J. Hajdu, V. Hajkova, P.A. Heimann, R. Irsig, L. Juha, M. Jurek, J. Krzywinski, T. Laarmann, H.J. Lee, R.W. Lee, B. Li, K.-H. Meiwes-Broer, J.P. Mithen, B. Nagler, A.J. Nelson, A. Przystawik, R. Redmer, D. Riley, F. Rosmej, R. Sobierajski, F. Tavella, R. Thiele, J. Tiggesbäumker, S. Toleikis, T. Tschentscher, L. Vysin, T.J. Whitcher, S. White, and J.S. Wark,
     Electronic Structure of an XUV Photogenerated Solid-Density Aluminum Plasma,
     Phys. Rev. Lett. 104, 225001 (2010); http://dx.doi.org/10.1103/PhysRevLett.104.225001
      
356. Y.H. Jiang, A. Rudenko, J.F. Pérez-Torres, O. Herrwerth, L. Foucar, M. Kurka, K.U. Kühnel, M. Toppin, E. Plésiat, F. Morales, F. Martín, M. Lezius, M.F. Kling, T. Jahnke, R. Dörner, J.L. Sanz-Vicario, J. van Tilborg, A. Belkacem, M. Schulz, K. Ueda, T.J.M. Zouros, S. Düsterer, R. Treusch, C.D. Schröter, R. Moshammer, and J. Ullrich,
     Investigating two-photon double ionization of D₂ by XUV-Pump-XUV-Probe experiments,
     Phys. Rev. A 81, 051402(R) (2010); http://dx.doi.org/10.1103/PhysRevA.81.051402
      
357. R. Treusch and J. Feldhaus
     FLASH: new opportunities for (time-resolved) coherent imaging of nanostructures,
     New J. Phys. 12, 035015 (2010); http://dx.doi.org/10.1088/1367-2630/12/3/035015
     (Focus issue on "X-ray sources with high coherence")
      
358. A.P. Mancuso, Th. Gorniak, F. Staier, O.M. Yefanov, R. Barth, C. Christophis, B. Reime, J. Gulden, A. Singer, M.E. Pettit, Th. Nisius, Th. Wilhein, C. Gutt, G. Grübel, N. Guerassimova, R. Treusch, J. Feldhaus, S. Eisebitt, E. Weckert, M. Grunze, A. Rosenhahn and I.A. Vartanyants,
     Coherent Imaging of Biological Samples with Femtosecond Pulses at the Free Electron Laser FLASH,
     New J. Phys. 12, 035003 (2010); http://dx.doi.org/10.1088/1367-2630/12/3/035003
     (Focus issue on "X-ray sources with high coherence")
      
359. I. Rajkovic, G. Busse, J. Hallmann, R. Moré, M. Petri, W. Quevedo, F. Krasniqi, A. Rudenko, T. Tschentscher, N. Stojanovic, S. Düsterer, R. Treusch, M. Tolkien, and S. Techert,
     Diffraction Properties of Periodic Lattices under Free Electron Laser Radiation,
     Phys. Rev. Lett. 104, 125503 (2010); http://dx.doi.org/10.1103/PhysRevLett.104.125503
      
360. R.R. Fäustlin, Th. Bornath, T. Döppner, S. Düsterer, E. Förster, C. Fortmann, S.H. Glenzer, S. Göde, G. Gregori, R. Irsig, T. Laarmann, H.J. Lee, B. Li, K.-H. Meiwes-Broer, J. Mithen, B. Nagler, A. Przystawik, H. Redlin, R. Redmer, H. Reinholz, G. Röpke, F. Tavella, R. Thiele, J. Tiggesbäumker, S. Toleikis, I. Uschmann, S.M. Vinko, T. Whitcher, U. Zastrau, B. Ziaja, and Th.Tschentscher,
     Observation of Ultrafast Nonequilibrium Collective Dynamics in Warm Dense Hydrogen,
     Phys. Rev. Lett. 104, 125002 (2010); http://dx.doi.org/10.1103/PhysRevLett.104.125002
      
361. C. Gutt, S. Streit-Nierobisch, L.-M. Stadler, B. Pfau, C.M. Günther, R. Könnecke, R. Frömter, A. Kobs, D. Stickler, H.P. Oepen, R.R. Fäustlin, R. Treusch, J. Feldhaus, E. Weckert, I.A. Vartanyants, M. Grunze, A. Rosenhahn, T. Wilhein, S. Eisebitt, and G. Grübel,
     Single-pulse resonant magnetic scattering using a soft X-ray free-electron laser,
     Phys. Rev. B 81, 100401(R) (2010); http://dx.doi.org/10.1103/PhysRevB.81.100401
      
362. Y.H. Jiang, A. Rudenko, E. Plésiat, L. Foucar, M. Kurka, K.U. Kühnel, Th. Ergler, J. F. Pérez-Torres, F. Martín, O. Herrwerth, M. Lezius, M. Kling, J. Titze, T. Jahnke, R. Dörner, J.L. Sanz-Vicario, M. Schöffler, J. Van Tilborg, A. Belkacem, K. Ueda, T.J.M. Zouros, S. Düsterer, R. Treusch, C.D. Schröter, R. Moshammer, and J. Ullrich,
     Tracing direct and sequential two-photon double ionization of D2 in femtosecond extreme-ulraviolet laser pulses,
     Phys. Rev. A 81, 021401(R) (2010); http://dx.doi.org/10.1103/PhysRevA.81.021401
      
363. Stefan P. Hau-Riege, Sébastien Boutet, Anton Barty, Saša Bajt, Michael Bogan, Jakob Andreasson, Bianca Iwan, Marvin M. Seibert, Janos Hajdu, Anne Sakdinawat, Joachim Schulz, Rolf Treusch, and Henry N.Chapman,
     Sacrificial Tamper Slows Down Sample Explosion in FLASH Diffraction Experiments,
     Phys. Rev. Lett. 104, 064801 (2010); http://dx.doi.org/10.1103/PhysRevLett.104.064801
      
364. B. Siemer, T. Hoger, M. Rutkowski, R. Treusch and H. Zacharias,
     Desorption of ionic species from ice/graphite by femtosecond XUV free-electron laser pulses,
     J. Phys.: Condens. Matter 22, 084013 (2010); http://dx.doi.org/10.1088/0953-8984/22/8/084013
     (Special issue: "Non-thermal processes on surfaces", dedicated to the memory of Theodore E.Madey)
      
365. W.F. Schlotter, F. Sorgenfrei, T. Beeck, M. Beye, S. Gieschen, H. Meyer, M. Nagasono, A. Föhlisch, and W. Wurth,
     Longitudinal coherence measurements of an extreme-ultraviolet free-electron laser,
     Opt. Lett. 35, 372-374 (2010); http://dx.doi.org/10.1364/OL.35.000372
      
366. Michael J.Bogan, Sébastien Boutet, Henry N. Chapman, Stefano Marchesini, Anton Barty, W. Henry Benner, Urs Rohner, Matthias Frank, Stefan P. Hau-Riege, Sasa Bajt, Bruce Woods, M. Marvin Seibert, Bianca Iwan, Nicusor Timneanu, Janos Hajdu, and Joachim Schulz,
     Aerosol Imaging with a Soft X-Ray Free Electron Laser,
     Aerosol Science and Technology, 44, i-vi (2010); http://dx.doi.org/10.1080/02786820903485800
      
367. A.R. Khorsand, R. Sobierajski, E. Louis, S. Bruijn, E.D. van Hattum, R.W.E. van de Kruijs, M. Jurek, D. Klinger, J.B. Pelka, L. Juha, T. Burian, J. Chalupsky, J. Cihelka, V. Hajkova, L. Vysin, U. Jastrow, N. Stojanovic, S. Toleikis, H. Wabnitz, K. Tiedtke, K. Sokolowski-Tinten, U. Shymanovich, J. Krzywinski, S. Hau-Riege, R. London, A. Gleeson, E.M. Gullikson, and F. Bijkerk,
     Single shot damage mechanism of Mo/Si multilayer optics under intense pulsed XUV-exposure,
     Opt. Express 18, 700-712 (2010); http://dx.doi.org/10.1364/OE.18.000700
      
368. T.W.J. Dzelzainis, J. Chalupsky, M. Fajardo, R. Fäustlin, P.A. Heimann, V. Hajkova, L. Juha, M. Jurek, F.Y. Khattak, M. Kozlova, J. Krzywinski, R.W. Lee, B. Nagler, A.J. Nelson, F.B. Rosmej, R. Sobierajski, S. Toleikis, T. Tschentscher, S.M. Vinko, J.S. Wark, T. Whitcher, D. Riley,
     Plasma emission spectroscopy of solids irradiated by intense XUV pulses from a free electron laser,
     High Energy Density Phys. 6, 109-112 (2010); http://dx.doi.org/10.1016/j.hedp.2009.05.017
      
369. S. Toleikis, R.R. Fäustlin, L. Cao, T. Döppner, S. Düsterer, E. Förster, C. Fortmann, S.H. Glenzer, S. Göde, G. Gregori, R. Irsig, T. Laarmann, H.J. Lee, B. Li, J. Mithen, K.-H. Meiwes-Broer, A. Przystawik, P. Radcliffe, R. Redmer, F. Tavella, R. Thiele, J. Tiggesbäumker, N.X. Truong, I. Uschmann, U. Zastrau, Th. Tschentscher,
     Soft X-ray scattering using FEL radiation for probing near-solid density plasmas at few electron volt temperatures,
     High Energy Density Phys. 6, 15-20 (2010); http://dx.doi.org/10.1016/j.hedp.2009.06.012
      
370. Maria Krikunova, Theophilos Maltezopoulos, Armin Azima, Moritz Schlie, Ulrike Frühling, Harald Redlin, Roland Kalms, Stefan Cunovic, Nikolay M. Kabachnik, Marek Wieland, and Markus Drescher,
     Time-resolved ion spectrometry on xenon with the jitter-compensated soft x-ray pulses of a free-electron laser,
     New J. Phys. 11, 123019 (2009); http://dx.doi.org/10.1088/1367-2630/11/12/123019
      
371. A.J. Nelson, S. Toleikis, H. Chapman, S. Bajt, J. Krzywinski, J. Chalupsky, L. Juha, J. Cihelka, V. Hajkova, L. Vysin, T. Burian, M. Kozlova, R.R. Fäustlin, B. Nagler, S.M. Vinko, T. Whitcher, T. Dzelzainis, O. Renner, K. Saksl, A.R. Khorsand, P.A. Heimann, R. Sobierajski, D. Klinger, M. Jurek, J. Pelka, B. Iwan, J. Andreasson, N. Timneanu, M. Fajardo, J.S. Wark, D. Riley, T. Tschentscher, J. Hajdu, and R.W. Lee,
     Soft x-ray free electron laser microfocus for exploring matter under extreme conditions,
     Opt. Express 17, 18271-18278 (2009); http://dx.doi.org/10.1364/OE.17.018271
      
372. D.P. Bernstein, Y. Acremann, A. Scherz, M. Burkhardt, J. Stöhr, M. Beye, W.F. Schlotter, T. Beeck, F. Sorgenfrei, A. Pietzsch, W.Wurth, and A. Föhlisch,
     Near edge x-ray absorption fine structure spectroscopy with x-ray free-electron lasers,
     Appl. Phys. Lett. 95, 134102 (2009); http://dx.doi.org/10.1063/1.3236540
      
373. S.P. Hau-Riege, R.A. London, R.M. Bionta, D. Ryutov, R. Soufli, S. Bajt, M.A. McKernan, S.L. Baker, J. Krzywinski, R. Sobierajski, R. Nietubyc, D. Klinger, J.B. Pelka, M. Jurek, L. Juha, J. Chalupský, J. Cihelka, V. Hájková, A. Velyhan, J. Krása, K. Tiedtke, S. Toleikis, H. Wabnitz, M. Bergh, C. Caleman, and N. Timneanu,
     Wavelength dependence of the damage threshold of inorganic materials under extreme-ultraviolet free-electron-laser irradiation,
     Appl. Phys. Lett. 95, 111104 (2009); http://dx.doi.org/10.1063/1.3216845
      
374. T. Nisius, R. Früke, D. Schäfer, M. Wieland, M. Kuhlmann, E.Plönjes and T.Wilhein,
     Advances in X-ray microscopy at FLASH using transmissive optics,
     Proc. XRM2008, J. Phys.: Conf. Ser. 186, 012057 (2009); http://dx.doi.org/10.1088/1742-6596/186/1/012057
      
375. H.N. Chapman, S. Bajt, A. Barty, W.H. Benner, M.J. Bogan, S. Boutet, A. Cavalleri, S. Duesterer, M. Frank, J. Hajdu, S.P. Hau-Riege, B. Iwan, S. Marchesini, A. Sakdinawat, K. Sokolowski-Tinten, M.M. Seibert, N. Timneanu, R .Treusch, B.W. Woods,
     Coherent Imaging at FLASH,
     Proc. XRM2008, J. Phys.: Conf. Ser. 186, 012051 (2009); http://dx.doi.org/10.1088/1742-6596/186/1/012051
      
376. G. Zhu, M. Schuricke, J. Steinmann, J. Albrecht, J. Ullrich, I. Ben-Itzhak, T.J.M. Zouros, J. Colgan, M.S. Pindzola, and A. Dorn,
     Controlling Two-Electron Threshold Dynamics in Double Photoionization of Lithium by Initial-State Preparation,
     Phys. Rev. Lett. 103, 103008 (2009); http://dx.doi.org/10.1103/PhysRevLett.103.103008
      
377. Ulrike Frühling, Marek Wieland, Michael Gensch, Thomas Gebert, Bernd Schütte, Maria Krikunova, Roland Kalms, Filip Budzyn, Oliver Grimm, Jörg Rossbach, Elke Plönjes and Markus Drescher,
     Single-shot terahertz-field-driven X-ray streak camera,
     Nature Photonics 3, 523-528 (2009); http://dx.doi.org/10.1038/NPHOTON.2009.160
      
378. R. Mitzner, A.A. Sorokin, B. Siemer, S. Roling, M. Rutkowski, H. Zacharias, M. Neeb, T. Noll, F. Siewert, W. Eberhardt, M. Richter, P. Juranic, K. Tiedtke and J. Feldhaus,
     Direct autocorrelation of soft-x-ray free-electron-laser pulses by time-resolved two-photon double ionization of He,
     Phys. Rev. A 80, 0235402 (2009); http://dx.doi.org/10.1103/PhysRevA.80.025402
      
379. M. Martins, M. Wellhöfer, A.A. Sorokin, M. Richter, K. Tiedtke, and W. Wurth,
     Resonant multiphoton processes in the soft-x-ray regime,
     Phys. Rev. A 80, 023411 (2009); http://dx.doi.org/10.1103/PhysRevA.80.023411
      
380. Bob Nagler, Ulf Zastrau, Roland R. Fäustlin, Sam M. Vinko, Thomas Whitcher, A.J. Nelson, Ryszard Sobierajski, Jacek Krzywinski, Jaromir Chalupsky, Elsa Abreu, Saša Bajt, Thomas Bornath, Tomas Burian, Henry Chapman, Jaroslav Cihelka, Tilo Döppner, Stefan Düsterer, Thomas Dzelzainis, Marta Fajardo, Eckhart Förster, Carsten Fortmann, Eric Galtier, Siegfried H. Glenzer, Sebastian Göde, Gianluca Gregori, Vera Hajkova, Phil Heimann, Libor Juha, Marek Jurek, Fida Y. Khattak, Ali Reza Khorsand, Dorota Klinger, Michaela Kozlova, Tim Laarmann, Hae Ja Lee, Richard W. Lee, Karl-Heinz Meiwes-Broer, Pascal Mercere, William J. Murphy, Andreas Przystawik, Ronald Redmer, Heidi Reinholz, David Riley, Gerd Röpke, Frank Rosmej, Karel Saksl, Romain Schott, Robert Thiele, Josef Tiggesbäumker, Sven Toleikis, Thomas Tschentscher, Ingo Uschmann, Hubert J. Vollmer and Justin S. Wark,
     Turning solid aluminium transparent by intense soft X-ray photoionization,
     Nature Physics 5, 693-696 (2009); http://dx.doi.org/10.1038/NPHYS1341
      
381. J. Chalupský, V. Hájková, V. Altapova, T. Burian, A. J. Gleeson, L. Juha, M. Jurek, H. Sinn, M. Störmer, R. Sobierajski, K. Tiedtke, S. Toleikis, Th. Tschentscher, L. Vyšín, H. Wabnitz, and J. Gaudin,
     Damage of amorphous carbon induced by soft x-ray femtosecond pulses above and
     below the critical angle,
     Appl. Phys. Lett. 95, 031111, 2009; http://dx.doi.org/10.1063/1.3184785
      
382. H.B. Pedersen, S. Altevogt, B. Jordon-Thaden, O. Heber, L. Lammich, M.L. Rappaport, D. Schwalm, J. Ullrich, D. Zajfman, R. Treusch, N. Guerassimova, M. Martins and A. Wolf,
     Neutral and charged photofragment coincidence imaging with soft x-rays on molecular ion beams: Breakup of H3O+ at 13.5 nm,
     Phys. Rev. A 80, 012707 (2009); http://dx.doi.org/10.1103/PhysRevA.80.012707
      
383. M. Kurka, A. Rudenko, L. Foucar, K.U. Kühnel, Y.H. Jiang, Th. Ergler, T. Havermeier, M. Smolarski, S. Schössler, K. Cole, M. Schöffler, R. Dörner, M. Gensch, S. Düsterer, R. Treusch, S. Fritzsche, A.N. Grum-Grzhimajlo, E.V. Gryzlova, N.M. Kabachnik, C.D. Schröter, R. Moshammer, and J. Ullrich,
     Two-photon double ionization of Ne by free-electron laser radiation: a kinematically complete experiment,
     J. Phys. B: At. Mol. Opt. Phys. 42, 141002 (2009); http://dx.doi.org/10.1088/0953-4075/42/14/141002
      
384. C. Gutt, L.-M. Stadler, S. Streit-Nierobisch, A.P. Mancuso, A. Schropp, B. Pfau, C.M. Günther, R. Könnecke, J. Gulden, B. Reime, J. Feldhaus, E. Weckert, I.A. Vartaniants, O. Hellwig, F. Staier, R. Barth, M. Grunze, A. Rosenhahn, D. Stickler, H. Stillrich, R. Frömter, H.P. Oepen, M. Martins, T. Nisius, T. Wilhein, B. Faatz, N. Guerassimova, K. Honkavaara, V. Kocharyan, R. Treusch, E. Saldin, S. Schreiber, E.A. Schneidmiller, M.V. Yurkov, S. Eisebitt, and G. Grübel,
     Resonant magnetic scattering with femtosecond soft X-ray pulses from a free electron laser operating at 1.59 nm,
     Phys. Rev. B 79, 212406 (2009); http://dx.doi.org/10.1103/PhysRevB.79.212406
      
385. H. Thomas, C. Bostedt, M. Hoener, E. Eremina, H. Wabnitz, T. Laarmann, E. Plönjes, R. Treusch, A.R.B. de Castro and T.Möller,
     Shell explosion and core expansion of xenon clusters irradiated with intense femtosecond soft x-ray pulses,
     in Special Issue on attosecond and x-ray free electron laser physics:
     J. Phys. B: At. Mol. Opt. Phys. 42, 134018 (2009); http://dx.doi.org/10.1088/0953-4075/42/13/134018
      
386. P. Johnsson, A. Rouzée, W. Siu, Y. Huismans, F. Lépine, T. Marchenko, S. Düsterer, F. Tavella, N. Stojanovic, A. Azima, R. Treusch, M.F. Kling, M.J.J. Vrakking,
     Field-free molecular alignment probed by the free electron laser in Hamburg (FLASH),
     in Special Issue on attosecond and x-ray free electron laser physics:
     J. Phys. B: At. Mol. Opt. Phys. 42, 134017 (2009); http://dx.doi.org/10.1088/0953-4075/42/13/134017
      
387. Y.H. Jiang, A. Rudenko, M. Kurka, K.U. Kühnel, L. Foucar, Th. Ergler, S. Lüdemann, K. Zrost, T. Ferger, D. Fischer, A. Dorn, J. Titze, T. Jahnke, M. Schöffler, S. Schössler, T. Havermeier, M. Smolarski, K. Cole, R. Dörner, T.J.M. Zouros, S. Düsterer, R. Treusch, M. Gensch, C.D. Schröter, R. Moshammer, J. Ullrich,
     EUV-photon-induced multiple ionization and fragmentation dynamics: from atoms to molecules,
     in Special Issue on attosecond and x-ray free electron laser physics:
     J. Phys. B: At. Mol. Opt. Phys. 42, 134012 (2009); http://dx.doi.org/10.1088/0953-4075/42/13/134012
      
388. Axel Rosenhahn, Florian Staier, Thomas Nisius, David Schäfer, Ruth Barth, Christof Christophis, Lorenz-M. Stadler, Simone Streit-Nierobisch, Christian Gutt, Adrian Mancuso, Andreas Schropp, Johannes Gulden, Bernd Reime, Josef Feldhaus, Edgar Weckert, Bastian Pfau, Christian M.Günther, René Könnecke, Stefan Eisebitt, Michael Martins, Bart Faatz, Natalia Guerassimova, Katja Honkavaara, Rolf Treusch, Evgueni Saldin, Siegfried Schreiber, Evgeny A. Schneidmiller, Mikhail V. Yurkov, Ivan Vartaniants, Gerhard Grübel, Michael Grunze, Thomas Wilhein,
     Digital In-line Holography with femtosecond VUV radiation provided by the Free-electron laser FLASH,
     Opt. Express 17, 8220-8228 (2009); http://dx.doi.org/10.1364/OE.17.008220
      
389. M. Richter, M.Ya. Amusia, S.V. Bobashev, T. Feigl, P.N. Juranic, M. Martins, A.A. Sorokin, and K.Tiedtke,
     Extreme Ultraviolet Laser Excites Atomic Giant Resonance,
     Phys. Rev. Lett. 102, 163002 (2009); http://dx.doi.org/10.1103/PhysRevLett.102.163002
      
390. A. Azima, S. Düsterer, P. Radcliffe, H. Redlin, N. Stojanovic, W. Li, H. Schlarb, J. Feldhaus, D.Cubaynes, M. Meyer, J. Dardis, P. Hayden, P. Hough, V. Richardson, E.T. Kennedy, and J.T.Costello,
     Time-resolved pump-probe experiments beyond the jitter limitations at FLASH,
     Appl. Phys. Lett. 94, 144102 (2009); http://dx.doi.org/10.1063/1.3111789
      
391. A. Föhlisch, M. Beye, H. Redlin, and S. Düsterer,
     Towards X-ray induced transient grating methods for nanometer scale dynamics: Diffraction on transient structures induced by extreme ultraviolet radiation from FLASH,
     Eur. Phys. J. Special Topics 169, 123-128 (2009); http://dx.doi.org/10.1140/epjst/e2009-00981-0
      
392. V. Senz, T. Fischer, P. Oelßner, J. Tiggesbäumker, J. Stanzel, Ch. Bostedt, H. Thomas, M. Schöffler, L. Foucar, M. Martins, J. Neville, M. Neeb, Th. Möller, W. Wurth, E. Rühl, R. Dörner, H. Schmidt-Böcking, W. Eberhardt, G. Ganteför, R. Treusch, P. Radcliffe, and K.-H. Meiwes-Broer,
     Core-Hole Screening as Probe for Metal-to-Nonmetal Transition in Lead Clusters,
     Phys. Rev. Lett. 102, 138303 (2009); http://dx.doi.org/10.1103/PhysRevLett.102.138303
      
393. Christoph Bostedt, Henry N. Chapman, John T. Costello, Jose R. Crespo López-Urrutia, Stefan Düsterer, Sascha W. Epp, Josef Feldhaus, Alexander Föhlisch, Michael Meyer, Thomas Möller, Robert Moshammer, Mathias Richter, Klaus Sokolowski-Tinten, Andrei Sorokin, Kai Tiedtke, Joachim Ullrich, and Wilfried Wurth,
     Experiments at FLASH,
     Nucl. Instrum. Meth. A 601, 108-122 (2009); http://dx.doi.org/10.1016/j.nima.2008.12.202
      
394. Y. H. Jiang, A. Rudenko, M. Kurka, K.U. Kühnel, Th. Ergler, L. Foucar, M. Schöffler, S. Schössler, T. Havermeier, M. Smolarski, K. Cole, R. Dörner, S. Düsterer, R. Treusch, M. Gensch, C.D. Schröter, R. Moshammer, J. Ullrich,
     Few-Photon Multiple Ionization of N2 by Extreme Ultraviolet Free-Electron Laser Radiation,
     Phys. Rev. Lett. 102, 123002 (2009); http://dx.doi.org/10.1103/PhysRevLett.102.123002
      
395. K. Tiedtke, A. Azima, N. von Bargen, L. Bittner, S. Bonfigt, S. Düsterer, B. Faatz, U. Frühling, M. Gensch, Ch. Gerth, N. Guerassimova, U. Hahn, T. Hans, M. Hesse, K. Honkavaara, U. Jastrow, P. Juranic, S. Kapitzki, B. Keitel, T. Kracht, M. Kuhlmann,W. B. Li, M. Martins, T. Núñez, E. Plönjes, H. Redlin, E. L. Saldin, E. A. Schneidmiller, J. R. Schneider, S. Schreiber, N. Stojanovic, F. Tavella, S. Toleikis, R. Treusch, H. Weigelt, M. Wellhöfer, H. Wabnitz, M. V. Yurkov and J. Feldhaus,
     The soft X-ray free-electron laser FLASH at DESY: beamlines, diagnostics, and end stations,
     New J. Phys. 11, 023029 (2009); http://dx.doi.org/10.1088/1367-2630/11/2/023029
      
396. A. P. Mancuso, A. Schropp, B. Reime, L.-M. Stadler, A. Singer, J. Gulden, S. Streit-Nierobisch, C. Gutt, G. Grübel, J. Feldhaus, F. Staier, R. Barth, A. Rosenhahn, M. Grunze, T. Nisius, T. Wilhein, D. Stickler, H. Stillrich, R. Frömter, H. P. Oepen, M. Martins, B. Pfau, C. M. Günther, R. Könnecke, S. Eisebitt, B. Faatz, N. Guerassimova, K. Honkavaara, V. Kocharyan, R. Treusch, E. Saldin, S. Schreiber, E. A. Schneidmiller, M. V. Yurkov, E. Weckert and I. A. Vartanyants,
     Coherent-Pulse 2D Crystallography Using a Free-Electron Laser X-Ray Source,
     Phys. Rev. Lett. 102, 035502 (2009); http://dx.doi.org/10.1103/PhysRevLett.102.035502
      
397. J. Chalupský, L. Juha, V. Hájková, J. Cihelka, L. Vyšín, J.Gautier, J. Hajdu, S.P. Hau-Riege, M. Jurek, J. Krzywinski, R.A. London, E. Papalazarou, J.B. Pelka, G. Rey, S. Sebban, R. Sobierajski, N. Stojanovic, K. Tiedtke, S. Toleikis, T. Tschentscher, C. Valentin, H. Wabnitz, P. Zeitoun,
     Non-thermal desorption/ablation of molecular solids induced by ultra-short soft x-ray pulses,
     Opt. Express 17 208-217 (2009); http://dx.doi.org/10.1364/OE.17.000208
      
398. A. Singer, I. A. Vartaniants, M. Kuhlmann, S. Duesterer, R. Treusch and J. Feldhaus,
     Transverse Coherence Properties of the Free Electron Laser FLASH at DESY,
     Phys. Rev. Lett. 101, 254801 (2008); http://dx.doi.org/10.1103/PhysRevLett.101.254801
      
399. M. Richter, S. V. Bobashev, A. A. Sorokin, and K. Tiedtke,
     Photon-matter interaction at short wavelengths and ultra-high intensity − Gas-phase experiments at FLASH,
     Int. Conf. on Many Particle Spectroscopy of Atoms, Molecules, Clusters and Surfaces,
     Journal of Physics: Conference Series 141, 012014 (2008); http://dx.doi.org/10.1088/1742-6596/141/1/012014
      
400. U. Zastrau, C. Fortmann, R.R. Fäustlin, L.F. Cao, T. Döppner, S. Düsterer, S.H. Glenzer, G. Gregori, T. Laarmann, H.J. Lee, A. Przystawik, P. Radcliffe, H. Reinholz, G. Röpke, R. Thiele, J. Tiggesbäumker, N.X. Truong, S. Toleikis, I. Uschmann, A. Wierling, T. Tschentscher, E. Förster, R. Redmer,
     Bremsstrahlung and line spectroscopy of warm dense aluminum plasma heated by xuv free-electron-laser radiation,
     Phys. Rev. E 78, 066406 (2008); http://dx.doi.org/10.1103/PhysRevE.78.066406
      
401. R. Mitzner, B. Siemer, M. Neeb, T. Noll, F. Siewert, S. Roling, M. Rutkowski, A.A. Sorokin, M. Richter, P. Juranic, K. Tiedtke, J. Feldhaus, W. Eberhardt and H. Zacharias,
     Spatio - temporal coherence of free electron laser pulses in the soft x-ray regime,
     Opt. Express 16, 19909-19919 (2008); http://dx.doi.org/10.1364/OE.16.019909
      
402. M. Meyer, D. Cubaynes, D. Glijer, J. Dardis, P. Hayden, P. Hough, V. Richardson, E.T. Kennedy, J.T. Costello, P. Radcliffe, S.Düsterer, A. Azima, W.B. Li, H. Redlin, J. Feldhaus, R. Taïeb, A. Maquet, A.N. Grum-Grzhimailo, E.V. Gryzlova and S.I. Strakhova,
     Polarization Control in Two-Color Above-Threshold Ionization of Atomic Helium,
     Phys. Rev. Lett. 101, 193002 (2008); http://dx.doi.org/10.1103/PhysRevLett.101.193002
      
403. S. Vielhauer, V. Babin, M. De Grazia, E. Feldbach, M. Kirm, V. Nagirnyi and A. Vasil'ev,
     Self-quenching effects of excitons in CaWO4 under high density XUV FEL excitation,
     Phys. Sol. State 50, 1789-1794 (2008); http://dx.doi.org/10.1134/S1063783408090394
      
404. P. Johnsson, W. Siu, A. Gijsbertsen, J. Verhoeven, A. S.Meijer, W. van der Zande, M. J. J. Vrakking,
     Velocity map imaging of atomic and molecular processes at the free electron laser in Hamburg (FLASH),
     J. Mod. Optics 55, 2693-2709 (2008); http://dx.doi.org/10.1080/09500340802393062
      
405. Sébastien Boutet, Michael J. Bogan, Anton Barty, Matthias Frank, W. Henry Benner, Stefano Marchesini, M. Marvin Seibert, Janos Hajdua, Henry N.Chapman,
     Ultrafast soft X-ray scattering and reference-enhanced diffractive imaging of weakly-scattering nanoparticles,
     J. Electron Spectrosc. Relat. Phenom. 166-167, 65-73 (2008); http://dx.doi.org/10.1016/j.elspec.2008.06.004
      
406. M.Richter, S.V. Bobashev, A.A. Sorokin, K. Tiedtke,
     Nonlinear photoionization in the soft X-ray regime,
     Appl. Phys. A 92, 473-478 (2008); http://dx.doi.org/10.1007/s00339-008-4589-9
      
407. K. Tiedtke, J. Feldhaus, U. Hahn, U. Jastrow, T. Nunez, T. Tschentscher, S.V. Bobashev, A.A. Sorokin, J.B. Hastings, S. Möller, L. Cibik, A. Gottwald, A. Hoehl, U. Kroth, M. Krumrey, H. Schöppe, G. Ulm and M. Richter,
     Gas detectors for x-ray lasers,
     J. Appl. Phys. 103, 094511 (2008); http://dx.doi.org/10.1063/1.2913328
      
408. T. Maltezopoulos, S. Cunovic, M. Wieland, M. Beye, A. Azima, H. Redlin, M. Krikunova, R. Kalms, U. Frühling, F. Budzyn, W. Wurth, A. Föhlisch, M. Drescher,
     Single-shot timing measurement of extreme-ultraviolet free-electron laser pulses,
     New Journal of Physics 10, 033026 (2008); http://dx.doi.org/10.1088/1367-2630/10/3/033026
      
409. A. Pietzsch, A. Föhlisch, M. Beye, M. Deppe, F. Hennies, M. Nagasono, E. Suljoti, W. Wurth, C. Gahl, K. Döbrich and A. Melnikov,
     Towards time-resolved core level photoelectron spectroscopy with fs X-ray FELs,
     New Journal of Physics 10, 033004 (2008); http://dx.doi.org/10.1088/1367-2630/10/3/033004
      
410. M. Kirm, V. Babin, E. Feldbach, S.Guizard, M. De Grazia, V. Nagirnyi, A. Vasil'ev, S. Vielhauer,
     Behaviour of scintillators under XUV free electron laser radiation,
     J. Luminescence, 128,732-734 (2008); http://dx.doi.org/10.1016/j.jlumin.2007.10.025
      
411. M. Gensch, L. Bittner, A. Chesnov, H. Delsim-Hashemi, M. Drescher, B. Faatz, J. Feldhaus, U. Fruehling, G.A.Geloni, Ch. Gerth, O.Grimm, U. Hahn, M. Hesse, S. Kapitzki, V. Kocharyan, O. Kozlov, E. Matyushevsky, N. Morozov, D. Petrov, E. Ploenjes, M. Roehling, J. Rossbach, E.L. Saldin, B. Schmidt, P. Schmueser, E.A. Schneidmiller, E. Syresin, A. Willner and M.V. Yurkov,
     New infrared undulator beamline at FLASH,
     Infrared Phys. Technol. 51, 423-425 (2008); http://dx.doi.org/10.1016/j.infrared.2007.12.032
      
412. M. Wellhöfer, J.T. Hoeft, M. Martins, W. Wurth, M. Braune, J. Viefhaus, K. Tiedtke and M. Richter,
     Photoelectron spectroscopy as a non-invasive method to monitor SASE-FEL spectra,
     JINST 3, P02003 (2008); http://dx.doi.org/10.1088/1748-0221/3/02/P02003
      
413. Michael J. Bogan, W. Henry Benner, Sébastien Boutet, Urs Rohner, Matthias Frank, Anton Barty, M. Marvin Seibert, Filipe Maia, Stefano Marchesini, Saša Bajt, Bruce Woods, Vincent Riot, Stefan P. Hau-Riege, Martin Svenda, Erik Marklund, Eberhard Spiller, Janos Hajdu, and Henry N. Chapman,
     Single particle X-ray diffractive imaging,
     Nano Letters 8, 310-316 (2008); http://dx.doi.org/10.1021/nl072728k
      
414. A. Rudenko, L. Foucar, M. Kurka, Th. Ergler, K.U. Kühnel, Y.H. Jiang, A. Voitkiv, B. Najjari, A. Kheifets, S. Lüdemann, T. Havermeier, M. Smolarski, S. Schössler, K. Cole, M. Schöffler, R. Dörner, S. Düsterer, W. Li, B. Keitel, R. Treusch, M. Gensch, C.D. Schröter, R. Moshammer and J. Ullrich,
     Recoil-Ion Momentum Distributions for Two-Photon Double Ionization of He and Ne by 44 eV Free-Electron Laser Radiation,
     Phys. Rev. Lett. 101, 073003 (2008); http://dx.doi.org/10.1103/PhysRevLett.101.073003
      
415. Stefano Marchesini, Sébastien Boutet, Anne E. Sakdinawat, Michael J. Bogan, Saša Bajt, Anton Barty, Henry N. Chapman, Matthias Frank, Stefan P. Hau-Riege, Abraham Szöke, Congwu Cui, David A. Shapiro, Malcolm R. Howells, John C. H. Spence, Joshua W. Shaevitz, Joanna Y. Lee, Janos Hajdu and Marvin M. Seibert,
     Massively parallel X-ray holography,
     Nature Photonics 2, 560-563 (2008); http://dx.doi.org/10.1038/nphoton.2008.154
      
416. M. Hoener, C. Bostedt, H. Thomas, L. Landt, E. Eremina, H. Wabnitz, T. Laarmann, R. Treusch, A.R.B. de Castro, and T. Möller,
     Charge recombination in soft x-ray laser produced nanoplasmas,
     J. Phys. B: At. Mol. Opt. Phys. 41, 181001 (2008); http://dx.doi.org/10.1088/0953-4075/41/18/181001
      
417. Anton Barty, Sébastien Boutet, Michael J. Bogan, Stefan Hau-Riege, Stefano Marchesini, Klaus Sokolowski-Tinten, Nikola Stojanovic, Ra'anan Tobey, Henri Ehrke, Andrea Cavalleri, Stefan Düsterer, Matthias Frank, Saša Bajt, Bruce W. Woods, M. Marvin Seibert, Janos Hajdu, Rolf Treusch and Henry N. Chapman,
     Ultrafast single-shot diffraction imaging of nanoscale dynamics,
     Nature Photonics 2, 415-419 (2008); http://dx.doi.org/10.1038/nphoton.2008.128
      
418. C. Bostedt, H. Thomas, M. Hoener, E. Eremina, T. Fennel, K.-H. Meiwes-Broer, H. Wabnitz, M. Kuhlmann, E. Plönjes, K. Tiedtke, R. Treusch, J. Feldhaus, A.R.B. de Castro and T. Möller,
     Multistep Ionization of Argon Clusters in intense femtosecond XUV pulses,
     Phys. Rev. Lett. 100, 133401 (2008); http://dx.doi.org/10.1103/PhysRevLett.100.133401
      
419. M. Bergh, N. Timneanu, S.P. Hau-Riege and H.A. Scott,
     Interaction of ultrashort x-ray pulses with B₄C, SiC, and Si,
     Phys. Rev. E 77, 026404 (2008); http://dx.doi.org/10.1103/PhysRevE.77.026404
      
420. Cornelius Gahl, Armin Azima, Martin Beye, Martin Deppe, Kristian Döbrich, Urs Hasslinger, Franz Hennies, Alexej Melnikov, Mitsuru Nagasono, Annette Pietzsch, Martin Wolf, Wilfried Wurth and Alexander Föhlisch,
     A femtosecond X-ray/optical cross-correlator,
     Nature Photonics 2, 165-169 (2008); http://dx.doi.org/10.1038/nphoton.2007.298
      
421. A.A. Sorokin, S.V. Bobashev, T. Feigl, K. Tiedtke, H. Wabnitz, and M. Richter,
     Photoelectric Effect at Ultrahigh Intensities,
     Phys. Rev. Lett. 99, 213002 (2007); http://dx.doi.org/10.1103/PhysRevLett.99.213002
      
422. P. Radcliffe, S. Düsterer, A. Azima, W.B. Li, E. Plönjes, H. Redlin, J. Feldhaus, P. Nicolosi, L. Poletto, J. Dardis, J.P. Gutierrez, P. Hough, K.D. Kavanagh, E.T. Kennedy, H. Luna, P. Yeates, J.T. Costello, A. Delyseries, C.L.S. Lewis, D. Glijer, D. Cubaynes, M.Meyer,
     An experiment for two-color photoionization using high intensity extreme-UV free electron and near-IR laser pulses,
     Nucl. Instrum. and Meth. A 583 516-525 (2007); http://dx.doi.org/10.1016/j.nima.2007.09.014
      
423. Stefan P. Hau-Riege, Richard A. London, Henry N. Chapman and Magnus Bergh,
     Soft-x-ray free-electron-laser interaction with materials,
     Phys. Rev. E 76, 046403 (2007); http://dx.doi.org/10.1103/PhysRevE.76.046403
      
424. Henry N. Chapman, Stefan P. Hau-Riege, Michael J. Bogan, Saša Bajt, Anton Barty, Sébastien Boutet, Stefano Marchesini, Matthias Frank, Bruce W. Woods, W. Henry Benner, Richard A. London, Urs Rohner, Abraham Szöke, Eberhard Spiller, Thomas Möller, Christoph Bostedt, David A. Shapiro, Marion Kuhlmann, Rolf Treusch, Elke Plönjes, Florian Burmeister, Magnus Bergh, Calle Caleman, Gösta Huldt, M. Marvin Seibert, and Janos Hajdu,
     Femtosecond Time-Delay X-ray Holography,
     Nature 448, 676-679 (2007); http://dx.doi.org/10.1038/nature06049
      
425. A. Föhlisch, M. Nagasono, M. Deppe, E. Suljoti, F. Hennies, A. Pietzsch, and W. Wurth,
     High-brilliance free-electron-laser photoionization of N₂: Ground-state depletion and radiation-field-induced modifications,
     Phys. Rev. A 76, 013411 (2007); http://dx.doi.org/10.1103/PhysRevA.76.013411
      
426. A. Höll, Th. Bornath, L.Cao, T. Döppner, S. Düsterer, E. Förster, C. Fortmann, S.H. Glenzer, G. Gregori, T. Laarmann, K.-H. Meiwes-Broer, A. Przystawik, P. Radcliffe, R. Redmer, H. Reinholz, G. Röpke, R. Thiele, J. Tiggesbäumker, S. Toleikis, N.X. Truong, T. Tschentscher, I. Uschmann, U.  Zastrau,
     Thomson scattering from near-solid density plasmas using soft X-ray free electron lasers,
     High Energy Density Physics 3, 120-130 (2007); http://dx.doi.org/10.1016/j.hedp.2007.02.033
      
427. W. Ackermann et al.,
     Operation of a Free Electron Laser in the Wavelength Range from the Extreme Ultraviolet to the Water Window,
     Nature Photonics 1, 336-342 (2007); http://dx.doi.org/10.1038/nphoton.2007.76
      
428. H. B. Pedersen, S. Altevogt, B. Jordon-Thaden, O. Heber, M. L. Rappaport, D. Schwalm, J. Ullrich, D. Zajfman, R. Treusch, N. Guerassimova, M.Martins, J.-T.Hoeft, M.Wellhöfer, and A.Wolf,
     Crossed Beams Photodissociation Imaging of HeH⁺ with Vacuum Ultraviolet Free Electron Laser Pulses,
     Phys. Rev. Lett. 98, 223202 (2007); http://dx.doi.org/10.1103/PhysRevLett.98.223202
      
429. R. Moshammer, Y.H. Jiang, L. Foucar, A. Rudenko, Th. Ergler, C.D. Schröter, S. Lüdemann, K. Zrost, D. Fischer, J. Titze, T. Jahnke, M. Schöffler, T. Weber, R. Dörner, T.J.M. Zouros, A. Dorn, T. Ferger, K.U. Kühnel, R. Treusch, P. Radcliffe, E. Plönjes, and J. Ullrich,
     Few-photon Multiple Ionization of Ne and Ar by Strong Free-Electron-Laser Pulses,
     Phys. Rev. Lett. 98, 203001 (2007); http://dx.doi.org/10.1103/PhysRevLett.98.203001
      
430. M. Nagasono, E. Suljoti, A. Pietzsch, F. Hennies, M. Wellhöfer, J.-T. Hoeft, M. Martins, W. Wurth, R. Treusch, J. Feldhaus, J.R. Schneider, and A. Föhlisch,
     Resonant two-photon absorption of extreme ultraviolet FEL radiation in Helium,
     Phys. Rev. A 75, 051406(R) (2007); http://dx.doi.org/10.1103/PhysRevA.75.051406
      
431. A.A. Sorokin, M. Wellhöfer, S.V. Bobashev, K. Tiedtke, and M. Richter,
     X-ray-laser interaction with matter and the role of multiphoton ionization: Free-electron-laser studies on neon and helium,
     Phys. Rev. A 75, 051402(R) (2007); http://dx.doi.org/10.1103/PhysRevA.75.051402
      
432. J. Chalupský, L. Juha, J. Kuba, J. Cihelka, V. Hájková, S. Koptyaev, J. Krása, A. Velyhan, M. Bergh, C. Caleman, J. Hajdu, R.M. Bionta, H. Chapman, S.P. Hau-Riege, R.A. London, M. Jurek, J. Krzywinski, R. Nietubyc, J.B. Pelka, R. Sobierajski, J. Meyer-ter-Vehn, A. Tronnier, K. Sokolowski-Tinten, N. Stojanovic, K. Tiedtke, S. Toleikis, T. Tschentscher, H. Wabnitz, and U. Zastrau,
     Characteristics of focused soft X-ray free-electron laser beam determined by ablation of organic molecular solids,
     Opt. Express 15, 6036-6043 (2007); http://dx.doi.org/10.1364/OE.15.006036
      
433. S.W. Epp, J.R. Crespo López-Urrutia, G. Brenner, V. Mäckel, P.H. Mokler, R. Treusch, M. Kuhlmann, M.V. Yurkov, J. Feldhaus, J.R. Schneider, M. Wellhöfer, M. Martins, W. Wurth and J. Ullrich,
     Soft x-ray laser spectroscopy on trapped highly charged ions at FLASH,
     Phys. Rev. Lett. 98, 183001 (2007); http://dx.doi.org/10.1103/PhysRevLett.98.183001
      
434. S.P. Hau-Riege, H.N. Chapman, J. Krzywinski, R. Sobierajski, S. Bajt, R.A. London, M. Bergh, C. Caleman, R. Nietubyc, L. Juha, J. Kuba, E. Spiller, S. Baker, R. Bionta, K. Sokolowski-Tinten, N. Stojanovic, B. Kjornrattanawanich, E. Gullikson, E. Plönjes, S. Toleikis, and T. Tschentscher,
     Subnanometer-Scale Measurements of the Interaction of Ultrafast Soft X-Ray Free-Electron-Laser Pulses with Matter,
     Phys. Rev. Lett. 98, 145502 (2007); http://dx.doi.org/10.1103/PhysRevLett.98.145502
      
435. S.P. Hau-Riege, R.A. London, R.M. Bionta, M.A. McKernan, S.L. Baker, J. Krzywinski, R. Sobierajski, R. Nietubyc, J.B. Pelka, M. Jurek, L. Juha, J. Chalupsky, J. Cihelka, V. Hájková, A. Velyhan, J. Krása, J. Kuba, K. Tiedtke, S. Toleikis, Th. Tschentscher, H. Wabnitz, M. Bergh, C. Caleman, K. Sokolowski-Tinten, N. Stojanovic, and U. Zastrau,
     Damage threshold of inorganic solids under free-electron laser irradiation at 32.5nm wavelength,
     Appl. Phys. Lett. 90, 173128 (2007); http://dx.doi.org/10.1063/1.2734366
      
436. P. Radcliffe, S. Düsterer, A. Azima, H. Redlin, J. Feldhaus, J. Dardis, K. Kavanagh, H. Luna, J. Pedregosa Gutierrez, P. Yeates, E.T. Kennedy, J.T. Costello, A. Delserieys, C.L.S. Lewis, R. Taïeb, A. Maquet, D. Cubaynes and M. Meyer,
     Single-shot characterization of independent femtosecond extreme ultraviolet free electron and infrared laser pulses,
     Appl. Phys. Lett. 90, 131108 (2007); http://dx.doi.org/10.1063/1.2716360
      
437. S. Cunovic, N. Müller, R. Kalms, M. Krikunova, M. Wieland, M. Drescher, Th. Maltezopoulos, U. Frühling, H. Redlin, E. Plönjes-Palm, and J. Feldhaus,
     Time-to-space mapping in a gas medium for the temporal characterization of vacuum-ultraviolet pulses,
     Appl. Phys. Lett. 90, 121112 (2007); http://dx.doi.org/10.1063/1.2714999
      
438. M. Kirm, V. Babin, E. Feldbach, V. Nagirnyi, S. Vielhauer, S. Guizard, B. Carr, M. De Grazia, H. Merdji, A.N. Belsky, N. Fedorov, and P. Martin,
     Time resolved luminescence of solids excited by femtosecond VUV pulses and synchrotron radiation,
     phys. stat. sol. (c) 4, No. 3, 870-876 (2007); http://dx.doi.org/10.1002/pssc.200673876
      
439. A.R.B. de Castro, C. Bostedt, E. Eremina, M. Hoener, H. Thomas, T. Laarmann, T. Fennel, K.H. Meiwes-Broer, E. Plönjes, M. Kuhlmann, H. Wabnitz, and T. Möller,
     Spectroscopy of rare gas clusters using VUV light from a free-electron-laser,
     J. Electron Spectrosc. Relat. Phenom. 156158, 25-29 (2007); http://dx.doi.org/10.1016/j.elspec.2007.01.006
      
440. N. Stojanovic, D. von der Linde, K. Sokolowski-Tinten, U. Zastrau, F. Perner, E. Förster, R. Sobierajski, R. Nietubyc, M. Jurek, D. Klinger, J. Pelka, J. Krzywinski, L. Juha, J. Cihelka, A. Velyhan, S. Koptyaev, V. Hájková, J. Chalupsky, J. Kuba, T. Tschentscher, S. Toleikis, S. Düsterer, and H. Redlin,
     Ablation of solids using a femtosecond extreme ultraviolet free electron laser,
     Appl. Phys. Lett. 89, 241909 (2006); http://dx.doi.org/10.1063/1.2405398
      
441. A.A. Sorokin, A. Gottwald, A. Hoehl, U. Kroth, H. Schöppe, G. Ulm, M. Richter, S.V. Bobashev, I. Domracheva, D. Smirnov, K. Tiedtke, S. Düsterer, J. Feldhaus, U. Hahn, U. Jastrow, M. Kuhlmann, T. Nuñez, E. Plönjes, and R. Treusch,
     Method based on atomic photoionization for spot-size measurement on focused soft x-ray free-electron laser beams,
     Appl. Phys. Lett. 89, 221114 (2006); http://dx.doi.org/10.1063/1.2397561
      
442. M. Meyer, D. Cubaynes, P. OKeeffe, H. Luna, P. Yeates, E.T. Kennedy, J.T. Costello, P. Orr, R. Taïeb, A. Maquet, S. Düsterer, P. Radcliffe, H. Redlin, A. Azima, E. Plönjes, and J. Feldhaus,
     Two-color photoionization in xuv free-electron and visible laser fields,
     Phys. Rev. A 74, 011401(R) (2006); http://dx.doi.org/10.1103/PhysRevA.74.011401
      
443. Henry N. Chapman, Anton Barty, Michael J. Bogan, Sébastien Boutet, Matthias Frank, Stefan P. Hau-Riege, Stefano Marchesini, Bruce W. Woods, Saša Bajt, W. Henry Benner, Richard A. London, Elke Plönjes, Marion Kuhlmann, Rolf Treusch, Stefan Düsterer, Thomas Tschentscher, Jochen R. Schneider, Eberhard Spiller, Thomas Möller, Christoph Bostedt, Matthias Hoener, David A. Shapiro, Keith O. Hodgson, David van der Spoel, Florian Burmeister, Magnus Bergh, Carl Caleman, Gösta Huldt, M. Marvin Seibert, Filipe R.N.C. Maia, Richard W. Lee, Abraham Szöke, Nicusor Timneanu, and Janos Hajdu,
     Femtosecond diffractive imaging with a soft-X-ray free-electron laser,
     Nature Physics 2, 839-843 (2006); http://dx.doi.org/10.1038/nphys461
      
444. A.A. Sorokin, S.V. Bobashev, K. Tiedtke, and M. Richter,
     Multi-photon ionization of molecular nitrogen by femtosecond soft x-ray FEL pulses,
     J. Phys. B: At. Mol. Opt. Phys. 39, L299-L304 (2006); http://dx.doi.org/10.1088/0953-4075/39/14/L04
      
445. S. Düsterer, P. Radcliffe, G. Geloni, U. Jastrow, M. Kuhlmann, E. Plönjes, K. Tiedtke, R. Treusch, J. Feldhaus, P. Nicolosi, L. Poletto, P. Yeates, H. Luna, J.T. Costello, P. Orr, D. Cubaynes and M. Meyer,
     Spectroscopic characterization of vacuum ultraviolet free electron laser pulses,
     Opt. Lett. 31, 1750-1752 (2006); http://dx.doi.org/10.1364/OL.31.001750

446. V. Ayvazyan et al.,
     First operation of a Free-Electron Laser generating GW power radiation at 32 nm wavelength,
     Eur. Phys. J. D 37, 297-303 (2006); http://dx.doi.org/10.1140/epjd/e2005-00308-1
     
     
     Papers from experiments at the VUV-FEL at TTF1 (Tesla Test Facility, Phase 1):
      

447. J. Krzywinski, R. Sobierajski, M. Jurek, R. Nietubyc, J.B. Pelka, L. Juha, M. Bittner, V. Létal, and V. Vorlíček, A. Andrejczuk, J. Feldhaus, E.L. Saldin, E.A. Schneidmiller, R. Treusch, and M.V. Yurkov,
     Conductors, semiconductors, and insulators irradiated with shortwavelength free-electron laser,
     J. Appl. Phys. 101, 043107 (2007); http://dx.doi.org/10.1063/1.2434989
      
448. A.R.B. de Castro, T. Laarmann, J. Schulz, H. Wabnitz, and T. Möller,
     Photoionization of helium atoms irradiated with intense vacuum ultraviolet free-electron laser light. Part II. Theoretical modeling of multi-photon and single-photon processes,
     Phys. Rev. A 72, 023410 (2005); http://dx.doi.org/10.1103/PhysRevA.72.023410
      
449. T. Laarmann, A.R.B. de Castro, P. Gürtler, W. Laasch, J. Schulz, H. Wabnitz, and T. Möller,
     Photoionization of helium atoms irradiated with intense vacuum ultraviolet free-electron laser light. Part I. Experimental study of multiphoton and single-photon processes,
     Phys. Rev. A 72, 023409 (2005); http://dx.doi.org/10.1103/PhysRevA.72.023409
      
450. T. Laarmann, M. Rusek, H. Wabnitz, J. Schulz, A.R.B. de Castro, P. Gürtler, W. Laasch, and T. Möller,
     Emission of Thermally Activated Electrons from Rare Gas Clusters Irradiated with Intense VUV Light Pulses from a Free Electron Laser,
     Phys. Rev. Lett. 95, 063402 (2005); http://dx.doi.org/10.1103/PhysRevLett.95.063402
      
451. Libor Juha, Michal Bittner, Dagmar Chvostová, Josef Krása, Michaela Kozlová, Miroslav Pfeifer, Jiri Polan, Ansgar R. Präg, Bedrich Rus, Michal Stupka, Josef Feldhaus, Vit Létal, Zdenek Otcenasek, Jacek Krzywinski, Robert Nietubyc, Jerzy B. Pelka, Andrzej Andrejczuk, Ryszard Sobierajski, Leszek Ryc, Frederick P. Boody, Henryk Fiedorowicz, Andrzej Bartnik, Janusz Mikolajczyk, and Rafal Rakowski, Pavel Kubát, Ladislav Pína and Martin Horváth, Michael E. Grisham, Georgiy O. Vaschenko, Carmen S. Menoni, and Jorge J. Rocca,
     Short-wavelength ablation of molecular solids: pulse duration and wavelength effects,
     J. Microlith., Microfab., Microsyst. 4, 033007 (2005); http://dx.doi.org/10.1117/1.2037467
      
452. M.Kirm, A. Andrejczuk, J.Krzywinski, and R. Sobierajski,
     Influence of excitation density on luminescence decay in Y₃Al₅O₁₂:Ce and BaF₂ crystals excited by free electron laser radiation in VUV,
     phys. stat. sol. (c) 2, 649-652 (2005); http://dx.doi.org/10.1002/pssc.200460255
      
453. H. Wabnitz, A.R.B. de Castro, P. Gürtler, T. Laarmann, W. Laasch, J. Schulz, and T. Möller,
     Multiple Ionization of Rare Gas Atoms Irradiated with Intense VUV Radiation,
     Phys. Rev. Lett. 94, 023001 (2005); http://dx.doi.org/10.1103/PhysRevLett.94.023001
      
454. T. Laarmann, A.R.B. de Castro, P. Gürtler, W. Laasch, J. Schulz, H. Wabnitz, and T. Möller,
     Interaction of Argon Clusters with Intense VUV-Laser Radiation: The Role of Electronic Structure in the Energy-Deposition Process,
     Phys. Rev. Lett. 92, 143401 (2004); http://dx.doi.org/10.1103/PhysRevLett.92.143401
      
455. B. Steeg, L. Juha, J. Feldhaus, S. Jacobi, R. Sobierajski, C.Michaelsen, A. Andrejczuk, and J. Krzywinski,
     Total reflection amorphous carbon mirrors for vacuum ultraviolet free electron lasers,
     Appl. Phys. Lett. 84, 657-659 (2004); http://dx.doi.org/10.1063/1.1645320
      
456. H. Wabnitz, L. Bittner, A.R.B. de Castro, R. Döhrmann, P. Gürtler, T. Laarmann, W. Laasch, J. Schulz, A. Swiderski, K. von Haeften, T. Möller, B. Faatz, A. Fateev, J. Feldhaus, C. Gerth, U. Hahn, E. Saldin, E. Schneidmiller, K. Sytchev, K. Tiedtke, R. Treusch and M. Yurkov,
     Multiple ionisation of atom clusters by intense soft X-rays from a free-electron laser,
     Nature 420, 482-485 (2002); http://dx.doi.org/10.1038/nature01197
      
457. V. Ayvazyan et al.,
     A New Powerful Source for Coherent VUV Radiation: Demonstration of Exponential Growth and Saturation at the TTF Free-Electron Laser,
     Eur. Phys. J. D 20, 149-156 (2002); http://dx.doi.org/10.1140/epjd/e2002-00121-4
      
458. V. Ayvazyan et al.,
     Generation of GW radiation pulses from a VUV Free-Electron Laser operating in the femtosecond regime,
     Phys. Rev. Lett. 88, 104802 (2002); http://dx.doi.org/10.1103/PhysRevLett.88.104802
      
459. J. Andruszkow et al.,
     First Observation of Self-Amplified Spontaneous Emission in a Free-Electron Laser
     at 109 nm Wavelength,
     Phys. Rev. Lett. 85, 3825-3829 (2000); http://dx.doi.org/10.1103/PhysRevLett.85.3825