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Figure 3
Distributions of incident angles due to curvature and divergence for l = 10 mm. It was assumed that the footprint of the beam in its propagation direction is larger than the sample length (ξx > L). The curves were normalized to the value at the nominal incident angle (0.1°). The difference between convex and concave samples (solid/dotted curves) is only due to the shadowing effect, in this case for |R| < 2.86 m. The divergence function for R → ±∞ is shown in grey.

Journal logoJOURNAL OF
APPLIED
CRYSTALLOGRAPHY
ISSN: 1600-5767
Volume 59| Part 1| February 2026| Pages 93-107
https://doi.org/10.1107/S1600576725010726
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