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Figure 3
(a) Valence band spectrum of an Au plate measured using an Si(311) DCCM at a photon energy of 7.94 keV. The inset depicts a magnified view of the Fermi edge region. Experimental spectrum (filled black circles) is fitted with the Fermi–Dirac distribution function (solid red line). (b) Total energy resolution as a function of the photon energy and index of the DCCM crystal. The solid circles indicate those obtained by Fermi-edge measurements of an Au sample and the dashed lines are the theoretical energy bandwidths of the incident X-rays after DCCMs.

Journal logoJOURNAL OF
SYNCHROTRON
RADIATION
ISSN: 1600-5775
Volume 32| Part 6| November 2025| Pages 1578-1585
https://doi.org/10.1107/S1600577525007660
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