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Figure 8
Point spread function PSF at the beam center in pixel units. (a) Log of highly attenuated direct beam on the Rayonix detector. The intensity distribution is well described by a sum of four Gaussians with the narrow feature (1.94 pixels FWHM) accounting for 58.5% of the photons in the image. The integrated number of counts in this image is approximately 250000. (b) Horizontal and vertical slices through the PSF. Note the background offset of 10 counts, which translates to 1 on a log10 scale.

Journal logoJOURNAL OF
SYNCHROTRON
RADIATION
ISSN: 1600-5775
Volume 33| Part 3| May 2026| Pages 562-579
https://doi.org/10.1107/S1600577526001451
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