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Figure 8
Cutplane of Airy ring pattern: fixed (very-high) gain operation. Comparison between detector output and theoretical prediction for soft X-rays (250 eV photons diffraction through a circular pinhole). The good matching of the measured and expected spatial frequency of the rings suggests that the detector output is dominated by photons of the nominal energy, rather than by higher harmonics photons. Note that the top of the main peak is limited by the maximum full-well in this mode (a few thousand electrons).

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