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Figure 1
Sketches of the experimental schemes for obtaining (a) ultrahigh-resolution RSMs in two dimensions with an analyser and scintillation detector and (b) low-resolution RSMs in three dimensions using a 2D pixel detector. The turquoise plane is formed by the primary beam ki and surface normal n (coplanar scattering plane) and the green one denotes the plane perpendicular to the sample surface involving the [generally non-coplanar (b)] output beam kf. The 2D (Qx, Qz) RSMs are built from 2θ scans/shots of the pixel detector used in 1D mode with rocking angle ω = (θi − θf)/2. The 2D maps recorded under different azimuths φ can form a 3D RSM.

Journal logoJOURNAL OF
APPLIED
CRYSTALLOGRAPHY
ISSN: 1600-5767
Volume 55| Part 4| August 2022| Pages 823-836
https://doi.org/10.1107/S1600576722004885
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