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- Publisher
- Wiley
- Copyright
- Copyright © 2014 Wiley Subscription Services, Inc., A Wiley Company
- ISSN
- 0108-7673
- eISSN
- 1600-5724
- DOI
- 10.1107/S205327331400802X
- pmid
- 25176991
- Publisher site
- See Article on Publisher Site
Abstract
Symmetric Bragg‐case reflections from a thick, ideally imperfect, crystal slab are studied mostly by analytical means. The scattering transfer function of a thin mosaic layer is derived and brought into a form that allows for analytical approximations or easy quadrature. The Darwin–Hamilton equations are generalized, lifting the restriction of wavevectors to a two‐dimensional scattering plane. A multireflection expansion shows that wavevector diffusion can be studied independently of the real‐space coordinate. Combining analytical arguments and Monte Carlo simulations, multiple Bragg reflections are found to result in a minor correction of the reflected intensity, a moderate broadening of the reflected azimuth angle distribution, a considerable modification of the polar angle distribution, and a noticeable shift and distortion of rocking curves.
Journal
Acta Crystallographica Section A Foundations of Crystallography – Wiley
Published: Sep 1, 2014
Keywords: ;