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Figure 4
The calculated intensity distribution in diffraction space for the monochromator as it is rocked in ω and 2θ (lower view). The peaks for the Cu Kα1 and Cu Kα2 lines are clear; the abrupt drop in intensity, peaks and intensity fluctuations at the low 2θ values are associated with scattering close to the grazing exit critical angle. For the experiments the monochromator is set in ω to the Kα1 peak, and this gives the divergence profile as in the upper view. The calculation is performed in reciprocal space coordinates and then converted to diffraction space for the angular coordinates.

Journal logoJOURNAL OF
APPLIED
CRYSTALLOGRAPHY
ISSN: 1600-5767
Volume 46| Part 6| December 2013| Pages 1626-1639
https://doi.org/10.1107/S0021889813027313
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