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Figure 3
Simulated diffraction response from ring-shaped, undeformed single crystals under different beam conditions. When the beam is both pink and condensed (D1 and D2), strong chromatic aberrations appear. In A1–D1, the rings are centered on the optical axis, while in A2–D2, they diffract toward the detector edge. Cartesian line profiles across the ring edges are shown in E for all four pink-beam scenarios (C1–D2). Each line plot in panel E corresponds to an intensity profile across a ring wall as highlighted in C1–D2 with colored lines and markers. In panel E, the box-like `perfect profile' (black, dotted line) represents the theoretical ring wall profile in the absence of chromatic aberration, assuming a perfect imaging system (small pixels, no point spread).

Journal logoJOURNAL OF
APPLIED
CRYSTALLOGRAPHY
ISSN: 1600-5767
Volume 59| Part 4| August 2026|
https://doi.org/10.1107/S1600576726005200
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