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Figure 14
(a) The parameters defining the geometry of a crystallite at a distance r from the rotation axis φ, with orientation coordinates defined by U and W. (b) The total number of `specular' events (i) captured by the detector at 2θ = 60° from various radii as the sample is rotated, and (ii) the number of `non-specular' events that can reach the detector. The sample is assumed to be larger than the illuminated area, which is 10 × 10 mm; the kink in the profile occurs because the illuminated area is square and the fully illuminated area during a full rotation is a circle.

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ISSN: 2053-2733
Volume 70| Part 3| March 2014| Pages 257-282
doi:10.1107/S205327331400117X
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