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Figure 2
Principle mechanisms for the appearance of the Renninger effect. (a) Ewald sphere construction. In addition to the regular Ewald sphere, a third reciprocal lattice point intersects the sphere, indicating an additional diffraction path along reflections q2 and q3 instead of only q1. (b) Real space schematic. The primary beam k0 is diffracted at the blue crystal plane, resulting in the outgoing beam k1 corresponding to the reflection q1. At the same time, k0 is also diffracted at the green and red plane. The resulting beams k2 and k3 correspond to the reflections q2 and q3, respectively. k1 and k3 have the same direction as well as energy, thus the intensity of reflection q1 and multiple diffracted reflection q3 are superimposed in a constructive or destructive way.

Journal logoJOURNAL OF
SYNCHROTRON
RADIATION
ISSN: 1600-5775
Volume 31| Part 1| January 2024| Pages 28-34
https://doi.org/10.1107/S1600577523009670
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