Journal
JOURNAL OF SYNCHROTRON RADIATION
Volume 28, Issue -, Pages 1874-1880Publisher
INT UNION CRYSTALLOGRAPHY
DOI: 10.1107/S1600577521009437
Keywords
energy-dispersive X-ray absorption spectroscopy; Laue optics; bimetallic systems
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Funding
- German Research Foundation (DFG)
- Technical University of Munich (TUM)
- Center for Advanced Laser Applications (CALA)
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The paper proposes a setup for simultaneous two-color X-ray absorption spectroscopy at a laboratory-scale synchrotron facility, utilizing inverse Compton scattering technology, with the potential to study reaction mechanisms and synergistic effects of chemical systems containing multiple elements.
X-ray absorption spectroscopy (XAS) is an element-selective technique that provides electronic and structural information of materials and reveals the essential mechanisms of the reactions involved. However, the technique is typically conducted at synchrotrons and usually only probes one element at a time. In this paper, a simultaneous two-color XAS setup at a laboratory-scale synchrotron facility is proposed based on inverse Compton scattering (ICS) at the Munich Compact Light Source (MuCLS), which is based on inverse Compton scattering (ICS). The setup utilizes two silicon crystals in a Laue geometry. A proof-of-principle experiment is presented where both silver (Ag) and palladium (Pd) K-edge X-ray absorption near-edge structure spectra were simultaneously measured. The simplicity of the setup facilitates its migration to other ICS facilities or maybe to other X-ray sources (e.g. a bending-magnet beamline). Such a setup has the potential to study reaction mechanisms and synergistic effects of chemical systems containing multiple elements of interest, such as a bimetallic catalyst system.
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