Journal of Synchrotron Radiation (May 2022)

The meV XUV-RIXS facility at UE112-PGM1 of BESSY II

  • Karl Bauer,
  • Jan-Simon Schmidt,
  • Frank Eggenstein,
  • Régis Decker,
  • Kari Ruotsalainen,
  • Annette Pietzsch,
  • Thomas Blume,
  • Chun-Yu Liu,
  • Christian Weniger,
  • Frank Siewert,
  • Jana Buchheim,
  • Grzegorz Gwalt,
  • Friedmar Senf,
  • Peter Bischoff,
  • Lisa Schwarz,
  • Klaus Effland,
  • Matthias Mast,
  • Thomas Zeschke,
  • Ivo Rudolph,
  • Andreas Meißner,
  • Alexander Föhlisch

DOI
https://doi.org/10.1107/S1600577522003551
Journal volume & issue
Vol. 29, no. 3
pp. 908 – 915

Abstract

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Resonant inelastic X-ray scattering in the XUV-regime has been implemented at BESSY II, pushing for a few-meV bandwidth in inelastic X-ray scattering at transition metal M-edges, rare earth N-edges and the K-edges of light elements up to carbon with full polarization control. The new dedicated low-energy beamline UE112-PGM1 has been designed to provide 1 µm vertical and 20 µm horizontal beam dimensions that serve together with sub-micrometre solid-state sample positioning as the source point for a high-resolution plane grating spectrometer and a high-transmission Rowland spectrometer for rapid overview spectra. The design and commissioning results of the beamline and high-resolution spectrometer are presented. Helium autoionization spectra demonstrate a resolving power of the beamline better than 10 000 at 64 eV with a 300 lines mm−1 grating while the measured resolving power of the spectrometer in the relevant energy range is 3000 to 6000.

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