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Approximate intensity solutions for the multiple diffraction of neutrons in a many‐beam case
Author(s) -
Parente C. B. R.,
Mazzocchi V. L.,
Pimentel F. J. F.
Publication year - 1994
Publication title -
journal of applied crystallography
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.429
H-Index - 162
ISSN - 1600-5767
DOI - 10.1107/s0021889893008854
Subject(s) - intensity (physics) , neutron diffraction , beam (structure) , diffraction , neutron , materials science , optics , physics , nuclear physics , computational physics
Based on the theory developed for the multiple diffraction of neutrons in mosaic crystals, approximate intensity solutions have been derived allowing the calculation of multiple diffraction intensities when several ( n ≥ 4) beams contribute to the phenomenon. The solutions are also appropriate for the calculation of intensities when high absorption and high secondary extinction are present. From these solutions, a computer program ( MULTI ) has been written in order to simulate neutron multiple diffraction patterns. A brief description of MULTI and an example of its application to the simulation of high‐secondary‐extinction/high‐density neutron multiple diffraction patterns are included.