Two diffraction schemes for widely divergent beam of X-ray radiation

Two diffraction schemes for widely divergent beam of X-ray radiation

Peculiarities of two diffraction schemes: d-c (diaphragm-crystal) and c-d (crystaldiaphragm) for widely divergent beam of X-ray radiation are considered. It is determined and experimentally confirmed that in c-d scheme the diffraction image is a topographic map of the studied area of the crystal. It...

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Bibliographic Details
Published in:Journal of contemporary physics Vol. 50; no. 1; pp. 89 - 94
Main Authors: Avetyan, K. T., Levonyan, L. V., Semerjyan, H. S., Arakelyan, M. M., Badalyan, O. M., Zeynalyan, D. A.
Format: Journal Article
Language:English
Published: Heidelberg Allerton Press 2015
Subjects:
Particle and Nuclear Physics
Physics
Physics and Astronomy
crystal
X-ray radiation
diffraction scheme
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Summary:Peculiarities of two diffraction schemes: d-c (diaphragm-crystal) and c-d (crystaldiaphragm) for widely divergent beam of X-ray radiation are considered. It is determined and experimentally confirmed that in c-d scheme the diffraction image is a topographic map of the studied area of the crystal. It is also determined that in the d-c scheme, when L = 2 l ( l and L are, respectively, the crystal and the photographic plate distances from the diaphragm) the branches of the hyperbolas, formed by the characteristic radiations K α and K β (including reflections of the second and the third orders) merge into one straight line in the given family of the planes ( hkl ). It is experimentally determined that the character of confluence is very sensitive to the structural imperfections of the crystal under study.
ISSN:1068-3372
1934-9378
DOI:10.3103/S1068337215010144