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Figure 2
Schematic of X-ray diffraction of the iDCM (β = 0 corresponds to a conventional symmetric DCM). (a) The first crystal of the iDCM. PA is the projection of ki1 onto the yz plane. ϑi1 is the angle between PA and the y-axis. [{\varrho_{\rm{i1}}}] is the angle between ki1 and PA. [{\varrho_{\rm{i1}}}]  ≥ 0 if ki1z ≥ 0, and [{\varrho_{\rm{i1}}}] < 0 if ki1z < 0. The angles of other wavevectors have similar definitions. (b) The second crystal with the same β. ki2 = ke1. Changing energies of the DCM is by the ϑ-rotation of the two crystals together around the x-axis. (c) Relationship between the xyz and XYZ coordinate systems.

Journal logoJOURNAL OF
SYNCHROTRON
RADIATION
ISSN: 1600-5775
Volume 32| Part 1| January 2025| Pages 90-99
https://doi.org/10.1107/S1600577524009755
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