Study of X-ray topography using the super-Borrmann effect

X-ray topography exerting the super-Borrmann effect has been performed using synchrotron radiation to display dislocation images with a high-speed and high-resolution CMOS camera. Forward-transmitted X-rays are positively employed instead of reflected X-rays to reveal dislocations in relatively thic...

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Main Authors: J. Matsui, K. Takatsu, Y. Tsusaka
Format: Article
Language:English
Published: International Union of Crystallography 2022-09-01
Series:Journal of Synchrotron Radiation
Subjects:
Online Access:http://scripts.iucr.org/cgi-bin/paper?S1600577522007779
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author J. Matsui
K. Takatsu
Y. Tsusaka
author_facet J. Matsui
K. Takatsu
Y. Tsusaka
author_sort J. Matsui
collection DOAJ
description X-ray topography exerting the super-Borrmann effect has been performed using synchrotron radiation to display dislocation images with a high-speed and high-resolution CMOS camera. Forward-transmitted X-rays are positively employed instead of reflected X-rays to reveal dislocations in relatively thick crystals by simultaneously exciting a pair of adjacent {111} planes owing to the super-Borrmann effect. Before the experiment, minimum values of the attenuation coefficients AminP for σ and π polarizations of the incident X-rays in the three-beam case are calculated. Results demonstrate that AminP for both polarizations are almost 20 times larger than those in the two-beam (usual Borrmann effect) case. The transmitted X-rays can be used to confirm the efficacy of taking topographs under the super-Borrmann conditions, as well as under multiple-diffraction conditions. Furthermore, super-Borrmann topographs can be considered for relatively thick crystals, where a conventional Lang X-ray topography technique is difficult to apply.
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spelling doaj.art-0829bc1bde1c409da38f75a0616813512022-12-22T03:19:36ZengInternational Union of CrystallographyJournal of Synchrotron Radiation1600-57752022-09-012951251125710.1107/S1600577522007779ay5602Study of X-ray topography using the super-Borrmann effectJ. Matsui0K. Takatsu1Y. Tsusaka2Synchrotron Radiation Research Center, Hyogo Science and Technology Association, 1-490-2 Kouto, Shingu, Tatsuno, Hyogo 679-5165, JapanGraduate School of Science, University of Hyogo, 3-2-1 Kouto, Kamigori, Hyogo 678-1297, JapanGraduate School of Science, University of Hyogo, 3-2-1 Kouto, Kamigori, Hyogo 678-1297, JapanX-ray topography exerting the super-Borrmann effect has been performed using synchrotron radiation to display dislocation images with a high-speed and high-resolution CMOS camera. Forward-transmitted X-rays are positively employed instead of reflected X-rays to reveal dislocations in relatively thick crystals by simultaneously exciting a pair of adjacent {111} planes owing to the super-Borrmann effect. Before the experiment, minimum values of the attenuation coefficients AminP for σ and π polarizations of the incident X-rays in the three-beam case are calculated. Results demonstrate that AminP for both polarizations are almost 20 times larger than those in the two-beam (usual Borrmann effect) case. The transmitted X-rays can be used to confirm the efficacy of taking topographs under the super-Borrmann conditions, as well as under multiple-diffraction conditions. Furthermore, super-Borrmann topographs can be considered for relatively thick crystals, where a conventional Lang X-ray topography technique is difficult to apply.http://scripts.iucr.org/cgi-bin/paper?S1600577522007779topographysuper-borrmann effect
spellingShingle J. Matsui
K. Takatsu
Y. Tsusaka
Study of X-ray topography using the super-Borrmann effect
Journal of Synchrotron Radiation
topography
super-borrmann effect
title Study of X-ray topography using the super-Borrmann effect
title_full Study of X-ray topography using the super-Borrmann effect
title_fullStr Study of X-ray topography using the super-Borrmann effect
title_full_unstemmed Study of X-ray topography using the super-Borrmann effect
title_short Study of X-ray topography using the super-Borrmann effect
title_sort study of x ray topography using the super borrmann effect
topic topography
super-borrmann effect
url http://scripts.iucr.org/cgi-bin/paper?S1600577522007779
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