Juanjuan Huang: Energy Dispersive X-ray Absorption Spectroscopy at the Munich Compact Light Source

X-ray absorption spectroscopy (XAS) is an important characterization method but has been carried out mostly at large facilities, limiting the power as a routine characterization for scientific purposes. Therefore, a lot of effort has been put in developing laboratory XAS using x-ray tubes and other sources. Novel compact x-ray sources based on inverse Compton scattering can generate brilliant hard x-rays in a laboratory setting, e.g. with a footprint of 7 × 3 m for the one installed at the Munich Compact Light Source (MuCLS). Their low-divergence intense beams with tunable well-defined x-ray energies make them well suited for XAS techniques, especially for hard x-rays >10 keV. In this talk, I will briefly introduce the MuCLS facility and a specific XAS setup for such a source. The XAS spectra can be obtained in a short time with great spectral quality. This approach shows great potential to be an efficient and less costly substitute for routine XAS measurements at large facilities.

References:

1.  Huang, J. et al. Energy-Dispersive X-ray Absorption Spectroscopy with an Inverse Compton Source. Sci. Rep., 10, 8772 (2020). https://doi.org/10.1038/s41598-020-65225-4
2.  Eggl, E., et al. The Munich Compact Light Source: initial performance measures. J. Synchrotron Rad., 23, 1137-1142 (2016). https://doi.org/10.1107/S160057751600967X
3. Günther, B., et al. X-ray beamline of the Munich Compact Light Source. J. Synchrotron Rad., 27 (2020). https://doi.org/10.1107/S1600577520008309