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

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.

Source: Journal of Synchrotron Radiation - August 4, 2020 Category: Physics Authors: Zhou, K.J. Matsuyama, S. Strocov, V.N. Tags: RIXS X-ray spectroscopy hv2-spectrometer core-hole lifetime charge-neutral excitation research papers Source Type: research