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Figure 13
Measured cross section from 30 sheets of 1 mm-thick 99.99% pure polycrystalline aluminium sheet at wavelengths λ0 = 4.5, 6 and 8 Å, with wavelength spread Δλ/λ = 22%. Double Bragg diffraction is observed only at λ0 = 4.5 Å, where the Bragg condition is active for the hkl = 111 reflections in the face-centered cubic crystal structure. The scattering at longer wavelengths is likely to be due to the dislocation structure.

Journal logoJOURNAL OF
APPLIED
CRYSTALLOGRAPHY
ISSN: 1600-5767
Volume 48| Part 4| August 2015| Pages 1055-1071
https://doi.org/10.1107/S1600576715010729
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