Transient X-Ray Absorption Near Edge Structure Spectroscopy Using Broadband Free-Electron Laser Pulses.

Autor: Juranić P; Paul Scherrer Institute, Forschungsstrasse 111, Villigen, 5232, Switzerland., Cirelli C; Paul Scherrer Institute, Forschungsstrasse 111, Villigen, 5232, Switzerland., Mamyrbayev T; XRnanotech GmbH, PSI, Forschungsstrasse 111, Villigen, 5232, Switzerland., Uemura Y; European XFEL GmbH, Holzkoppel 4, 22869, Schenefeld, Germany., Vila-Comamala J; Paul Scherrer Institute, Forschungsstrasse 111, Villigen, 5232, Switzerland., Lima FA; European XFEL GmbH, Holzkoppel 4, 22869, Schenefeld, Germany., Bacellar C; Paul Scherrer Institute, Forschungsstrasse 111, Villigen, 5232, Switzerland., Johnson PJM; Paul Scherrer Institute, Forschungsstrasse 111, Villigen, 5232, Switzerland., Prat E; Paul Scherrer Institute, Forschungsstrasse 111, Villigen, 5232, Switzerland., Reiche S; Paul Scherrer Institute, Forschungsstrasse 111, Villigen, 5232, Switzerland., Wach A; Paul Scherrer Institute, Forschungsstrasse 111, Villigen, 5232, Switzerland., Bykova I; Paul Scherrer Institute, Forschungsstrasse 111, Villigen, 5232, Switzerland., Kahraman A; Paul Scherrer Institute, Forschungsstrasse 111, Villigen, 5232, Switzerland., Kabanova V; Paul Scherrer Institute, Forschungsstrasse 111, Villigen, 5232, Switzerland., Milne C; European XFEL GmbH, Holzkoppel 4, 22869, Schenefeld, Germany., David C; Paul Scherrer Institute, Forschungsstrasse 111, Villigen, 5232, Switzerland.
Jazyk: angličtina
Zdroj: Small methods [Small Methods] 2024 Aug; Vol. 8 (8), pp. e2301328. Date of Electronic Publication: 2024 Mar 05.
DOI: 10.1002/smtd.202301328
Abstrakt: A new method for time-resolved X-ray absorption near edge structure (XANES) spectroscopy that enables faster data acquisition and requires smaller sample quantities for high-quality data, thus allowing the analysis of more samples in a shorter time is introduced. The method uses large bandwidth free electron laser pulses to measure laser-excited XANES spectra in transmission mode. A beam-splitting grating configuration allows simultaneous measurements of the spectra of the incoming X-ray Free Electron Laser (XFEL) pulses and transmission XANES, which is crucial for compensating the pulse-dependent intensity and spectrum fluctuations due to the self-amplified spontaneous emission operation. The implementation of this new methodology is applied on a liquid solution of ammonium iron(III) oxalate jet and is compared to previous results, showing great improvements in the speed of acquisition and spectral resolution, and the ability to measure a large 2-D spectral-time map quickly.
(© 2024 The Author(s). Small Methods published by Wiley‐VCH GmbH.)
Databáze: MEDLINE
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