The FlexPES (Flexible PhotoElectron Spectroscopy) beamline caters for the experimental needs of both Surface/Material Science and Low Density Matter user communities offering the possibility to perform a variety of photoemission and soft X-ray absorption experiments in the photon energy range 40 – 1500 eV. The two-branch configuration with double-striped toroidal refocusing mirrors ensures maximum flexibility – up to four endstations can be accommodated on the two branches of the beamline simultaneously, and each of these endstations can avail of different focusing conditions. The end stations offer a diverse range of experimental techniques, detectors and sample handling facilities and can be used with a variety of sample delivery systems.

Techniques (as available by Q1 2020)

Available forTechnique/facility description
General UsersBeamline: Linear horizontally polarized light from LPU, with energy range 40-1500 eV. Spot on sample both defocused (0.5-1.5 mm) and focused (from 50x15 um to 150x40 um in different end stations).
General UsersSurface- and Material Science (SMS) branch: High-resolution photoelectron spectroscopy (PES) on solid samples using SES-2002 analyzer and 4-axis manipulator; X-ray absorption spectroscopy (XAS or NEXAFS) using total and partial electron yield.
General UsersLow Density Matter (LDM) branch: High-resolution PES on LDM samples using R4000 analyzer with the following sample delivery systems (samples must be approved by chemical safety group):
- Liquid jet setup for e.g. aqueous solutions
- Molecular jet source (continuous beam) for experiments on cold beams of atomic and molecular gases
- Gas cell for PES experiments on atomic and molecular gases

2020-03-31

First users at FlexPES look ‘through’ solar cells

  The FlexPES beamline has recently welcomed its first regular user, conducting experiments on a new type of semi-transparent solar cells. With its two branches and up to four focal points, FlexPES allows for research spanning over several scientific fields, from surface and material science, to studies on low-density matter. Commissioning activities for the FlexPES