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Figure 3
An example of the emission spots captured by the Medipix detector. The image was taken with seven Si(642) analysers focusing on the same spot to measure the Zn Kα line at the spectrometer angle of 81.4°. The green box (region of interest, ROI) indicates the area used to sum the emission signal. Once the spectrometer is aligned, the ROI is fixed, as the focal spots remain consistent during measurements. The ROI is also used to align the sample to the origin of the spectrometer by adjusting its position until the emission spots are placed within the green box.

Journal logoJOURNAL OF
SYNCHROTRON
RADIATION
ISSN: 1600-5775
Volume 33| Part 3| May 2026| Pages 848-857
https://doi.org/10.1107/S1600577526001736
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