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Figure 10
Comparison of signal from a strong single-shot diffraction pattern and average injection background. (a) Assembled diffraction pattern from a single shot with an estimated particle size of 43.2 nm and an incident photon intensity of 8.65 × 1011 photons µm−2. Single photons are coloured in black (the central speckle consists of multiple photons per pixel). Masked areas (no photons detected, bad pixels, strong X-ray background) are coloured grey. The image is cropped to a special frequency of 0.2 nm−1 at the edge. (b) Radial averages of the single-shot diffraction (red), the average injection background (green) and the sphere diffraction model (blue). A Gaussian filter with a kernel sigma of one pixel was applied to both traces from experimental data (red and green). Dashed rings in (a) and lines in (b) indicate full-period resolution of 5 and 10 nm.

IUCrJ
Volume 4| Part 3| May 2017| Pages 251-262
ISSN: 2052-2525
https://doi.org/10.1107/S2052252517003591