P09 Hard X-ray Photoelectron Spectrometer

P09 Hard X-ray Photoelectron Spectrometer

In experiment hutch 3, a high-resolution Hard X-ray Photoelectron Spectroscopy (HAXPES) instrument is installed, located at 94 m from the source.

In addition to the beamline optics described for hutches 1+2, a post monochromator is avaible for high-resolution spectroscopy with <100 meV energy resolution. For polarisation dependent experiments, a single stage of the P09 diamond phase retarder is used to produce left/right circular polarised light.

Photoelectrons with up to 10.5 keV kinetic energy can be measured in different experimental geometries by means of a SPECS Phoibos 225 HV hemispherical analyser with a delayline detector. For angle-resolved studies or high-transmission requirements, an optional wide angle lens (+- 30 degrees acceptance) can be adapted to the analyzer.

The analysis chamber is equipped with a custom made high-precision fully motorised OMICRON 5-axis manipulator with LHe cooling. The instrument is mounted on a motorised high-precision XZ-platform consisting of a monolithic granite support which is adjustable in height and can be translated transversely relative to the incoming X-ray beam with very high precision.

 
P09 Hard X-ray Photoelectron Spectrometer

SPECS Phoibos 225HV with mounted pre-lens.

P09 Hard X-ray Photoelectron Spectrometer

Manipulator head with 4-contact sample holder compartment.

P09 Hard X-ray Photoelectron Spectrometer

Side view of the sample holder mounted onto the manipulator.

Beam parameters in EH3

Photon Energy range:

2.7 - 15 keV focused (mirrors)

Focus size:

180 x 50 μm2

Polarization:

linear and
circular left/right

Photon Energy resolution:

< 1.4 eV with Si(111)
< 300 meV with Si(311)
< 100 meV with Si(333)/(444) postmono

HAXPES instrument parameters

Electron spectrometer

SPECS Phoibos 225HV
wide angle lens option (+- 30 deg)

Manipulator

Omicron 5-axis
integrated He-cryostat

Sample temperature range

45 - 400K

Electron Energy range:

0 - 10.5 keV

Total Energy Resolution:

typ. 100 - 400 meV

Photoelectron references spectra

P09 Hard X-ray Photoelectron Spectrometer
 
P09 Hard X-ray Photoelectron Spectrometer
 
P09 Hard X-ray Photoelectron Spectrometer