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Title: Peculiarities of the diffraction contrast in plane-wave X-ray topographs of weakly deformed crystals in the bragg geometry

Abstract

The regularities of the topographic contrast formation in weakly deformed nonabsorbing crystals in the Bragg geometry for the diffraction of a plane X-ray wave have been investigated by the method of Riemann functions. It is shown that in this case the extinction contrast has an interference character, alternates, and is proportional to the strain gradient rather than to the squared strain (like in the case of strong lattice distortions). The data of the analysis are compared with the results of a model numerical experiment. The possibility of implementing an X-ray-acoustic resonance in the Bragg geometry is shown.

Authors:
 [1]
  1. Russian Academy of Sciences, Shubnikov Institute of Crystallography (Russian Federation)
Publication Date:
OSTI Identifier:
22054266
Resource Type:
Journal Article
Journal Name:
Crystallography Reports
Additional Journal Information:
Journal Volume: 56; Journal Issue: 5; Other Information: Copyright (c) 2011 Pleiades Publishing, Ltd.; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 1063-7745
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; CRYSTALS; GEOMETRY; INTERFERENCE; RESONANCE; RIEMANN FUNCTION; STRAINS; WAVE PROPAGATION; X RADIATION; X-RAY DIFFRACTION

Citation Formats

Voloshin, A. E., E-mail: voloshin@ns.crys.ras.ru. Peculiarities of the diffraction contrast in plane-wave X-ray topographs of weakly deformed crystals in the bragg geometry. United States: N. p., 2011. Web. doi:10.1134/S1063774511050233.
Voloshin, A. E., E-mail: voloshin@ns.crys.ras.ru. Peculiarities of the diffraction contrast in plane-wave X-ray topographs of weakly deformed crystals in the bragg geometry. United States. doi:10.1134/S1063774511050233.
Voloshin, A. E., E-mail: voloshin@ns.crys.ras.ru. Thu . "Peculiarities of the diffraction contrast in plane-wave X-ray topographs of weakly deformed crystals in the bragg geometry". United States. doi:10.1134/S1063774511050233.
@article{osti_22054266,
title = {Peculiarities of the diffraction contrast in plane-wave X-ray topographs of weakly deformed crystals in the bragg geometry},
author = {Voloshin, A. E., E-mail: voloshin@ns.crys.ras.ru},
abstractNote = {The regularities of the topographic contrast formation in weakly deformed nonabsorbing crystals in the Bragg geometry for the diffraction of a plane X-ray wave have been investigated by the method of Riemann functions. It is shown that in this case the extinction contrast has an interference character, alternates, and is proportional to the strain gradient rather than to the squared strain (like in the case of strong lattice distortions). The data of the analysis are compared with the results of a model numerical experiment. The possibility of implementing an X-ray-acoustic resonance in the Bragg geometry is shown.},
doi = {10.1134/S1063774511050233},
journal = {Crystallography Reports},
issn = {1063-7745},
number = 5,
volume = 56,
place = {United States},
year = {2011},
month = {9}
}