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Figure 6
Ray diagram of a Debye–Scherrer XRD experiment showing the effect of speci­men displacement on 2θ value. The speci­men capillary is at S, the idealized speci­men position (typically the goniometer center) is at O, which is a length R from the detector, length d becomes more positive as S moves towards the detector, and X-rays are traveling from right to left. X-rays are diffracted through an angle 2θ at S, hitting the detector at D, which are measured at an angle 2θ − δ.

Journal logoJOURNAL OF
APPLIED
CRYSTALLOGRAPHY
ISSN: 1600-5767
Volume 56| Part 1| February 2023| Pages 160-166
https://doi.org/10.1107/S1600576722011360
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