1. A setup for hard x-ray time-resolved resonant inelastic x-ray scattering at SwissFEL
- Author
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Hui-Yuan Chen, Rolf B. Versteeg, Roman Mankowsky, Michele Puppin, Ludmila Leroy, Mathias Sander, Yunpei Deng, Roland Alexander Oggenfuss, Thierry Zamofing, Pirmin Böhler, Claude Pradervand, Aldo Mozzanica, Seraphin Vetter, Grigory Smolentsev, Linda Kerkhoff, Henrik T. Lemke, Majed Chergui, and Giulia F. Mancini
- Subjects
Crystallography ,QD901-999 - Abstract
We present a new setup for resonant inelastic hard x-ray scattering at the Bernina beamline of SwissFEL with energy, momentum, and temporal resolution. The compact R = 0.5 m Johann-type spectrometer can be equipped with up to three crystal analyzers and allows efficient collection of RIXS spectra. Optical pumping for time-resolved studies can be realized with a broad span of optical wavelengths. We demonstrate the performance of the setup at an overall ∼180 meV resolution in a study of ground-state and photoexcited (at 400 nm) honeycomb 5d iridate α-Li2IrO3. Steady-state RIXS spectra at the iridium L3-edge (11.214 keV) have been collected and are in very good agreement with data collected at synchrotrons. The time-resolved RIXS transients exhibit changes in the energy loss region
- Published
- 2024
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