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. 2020 May 29;10:8772. doi: 10.1038/s41598-020-65225-4

Figure 2.

Figure 2

(a) Geometric illustration of the energy-dispersive setup. The ~4 mrad cone angle of the x-ray source together with a Laue crystal results in an energy gradient across the detector. (b) The source spectrum was tuned to 26 keV configuration  for Ag measurement (measured with an energy-dispersive detector, KETEK AXAS-D, KETEK GmbH, Munich, Germany). The inset shows a zoom-in of the spectrum. The colored regions indicate the energy ranges that can be covered by Si(311) and Si(111) diffracted beams, corresponding to XAS images in Fig. 3.