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hv2-concept breaks the photon-count limit of RIXS instrumentation

DOI: 10.1107/S1600577520008607 DOI Help

Authors: Kejin Zhou (Diamond Light Source; Swiss Light Source) , Satoshi Matsuyama (Osaka University) , Vladimir N. Strocov (Swiss Light Source)
Co-authored by industrial partner: No

Type: Journal Paper
Journal: Journal Of Synchrotron Radiation , VOL 27

State: Published (Approved)
Published: September 2020

Open Access Open Access

Abstract: Upon progressive refinement of energy resolution, the conventional resonant inelastic X-ray scattering (RIXS) instrumentation reaches the limit where the bandwidth of incident photons becomes insufficient to deliver an acceptable photon-count rate. Here it is shown that RIXS spectra as a function of energy loss are essentially invariant to their integration over incident energies within the core-hole lifetime. This fact permits RIXS instrumentation based on the hv2-concept to utilize incident synchrotron radiation over the whole core-hole lifetime window without any compromise on the much finer energy-loss resolution, thereby breaking the photon-count limit.

Journal Keywords: RIXS; X-ray spectroscopy; hv2-spectrometer; core-hole lifetime; charge-neutral excitation

Subject Areas: Physics


Instruments: I21-Resonant Inelastic X-ray Scattering (RIXS)

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