P64 Advanced X-ray Absorption Spectroscopy

The closed-cycle cryostat in use together with the von-Hamos spectrometer
The closed-cycle cryostat in use together with the von-Hamos spectrometer

The first high-resolution emission spectra were collected of conventional powder samples at room temperature. In December, the first user-group studied phase-transitions in several iron-compounds.

User Operation since Spring 2017

Regular user operation at Beamline P64 started on May 5. Since then, more than 20 user groups performed experiments in different fields of research with different set-ups. Some groups came a few times, and most expressed interest to return for more experiments. The group of I. Arcon even published their first data collected at P64, and a few other manuscripts are close to submission.

If you plan to perform an experiment at P64, please contact the beamline scientists to check the availability of certain experimental equipment and the feasibility of your planned experiment before you start writing your proposal !

P64 is dedicated to X-ray absorption spectroscopy experiments, which require high flux. Among those are EXAFS of highly-diluted systems, e.g. bio-molecules with an active metallic center, quick EXAFS (QEXAFS) on the 20-100ms time-scale, and high-resolution spectroscopy with a dispersive fluorescence X-ray emission spectrometer in von-Hamos geometry (RXES). Other experiments, which require special set-ups and which profit from the high flux and small, focused beam, are also feasible and can be discussed with beamline staff. Beamline P64 is located in the P. P. Ewald Hall (PETRA III North Hall), which is close to the FLASH1 Hall. X-ray absorption spectroscopy finds applications in various research fields:

  • Physics: Mixed-valence compounds
  • Chemistry: Catalysis
  • Biology: Local environment of active metallic center
  • Environmental sciences: Fate and state of metallic contaminations
  • Arts: Composition and aging of paints