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Figure 1
Ewald construction of a three-beam diffraction in reciprocal space. Wave EP: primary wave from a single reflection A (diffraction vector gA) and wavevector kA = gA + k0. Wave ES: secondary wave from reflection B (diffraction vector gB) coupled by reflection C (diffraction vector gC = gA − gB) and wavevector kA = gC + kB. The ϕ and χ rotation axes are aligned along gA and the incident-beam direction, respectively.

Journal logoJOURNAL OF
SYNCHROTRON
RADIATION
ISSN: 1600-5775
Volume 10| Part 3| April 2003| Pages 236-241
doi:10.1107/S0909049503003789
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