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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.


  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