The Review of scientific instruments · 2026
The chemRIXS instrument for solution-phase resonant inelastic x-ray scattering at the linac coherent light source.
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Hoffman David J, Garratt Douglas, Bain Matthew, Hampton Christina Y, Poulter Benjamin I, Joshi Jyoti, Coslovich Giacomo, O'Dowd Frank P, DePonte Daniel P, Reid Alexander H, Shen Lingjia, Jost Daniel, Bionta Mina R, Turner Joshua J, Lin Ming-Fu, Heimann Philip, Moeller Stefan P, Koralek Jake D, Johnson Tyler, Ninh K, Almeida Raybel, Berges Adam, Fung Stephanie, Li Shuai, Pelimanni Eetu, Nimmrich Amke, Khalil Munira, Young Linda, Wolf Thomas J A, Kunnus Kristjan, Dakovski Georgi L
Аннотация
The chemRIXS instrument at the Linac Coherent Light Source (LCLS) offers new opportunities for studying solution-phase systems with time-resolved soft x-ray spectroscopic methods such as resonant inelastic x-ray scattering (RIXS) using the recently commissioned high-repetition-rate LCLS-II x-ray free-electron laser. The orders-of-magnitude x-ray flux improvement provided by the superconducting accelerator, combined with corresponding advances in the optical laser system and the liquid-jet recirculation system, enables studies on dilute systems with high signal-to-noise compared to what was possible with the LCLS-I copper accelerator. These capabilities open up time-resolved x-ray absorption spectroscopy and RIXS to entirely new classes of samples, as well as enable the development of new soft x-ray spectroscopic methods on liquid samples. An overview of the beamline components and the first LCLS-II commissioning results is presented.