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 (+9 others)
2022 Journal of Synchrotron Radiation  
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
more » ... 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.
doi:10.1107/s1600577522003551 pmid:35511024 pmcid:PMC9070711 fatcat:ysdaa7jlpzcafalm5mt6lczsve