This website uses cookies

The University of Liège wishes to use cookies or trackers to store and access your personal data, to perform audience measurement. Some cookies are necessary for the website to function. Cookie policy.

Article (Scientific journals)
Rocking curve imaging of high quality sapphire crystals in backscattering geometry
Jafari, A.; Sergueev, I.; Bessas, D. et al.
2017In Journal of Applied Physics, 121 (4), p. 044901
Peer Reviewed verified by ORBi
 

Files


Full Text
1.4974106.pdf
Publisher postprint (5.75 MB)
Request a copy

All documents in ORBi are protected by a user license.

Send to



Details



Keywords :
Backscattering; Lattice constants; Sapphire; X ray optics; Back reflection; Backscattering geometry; High resolution; Lattice spacing; Rocking curve width; Sapphire crystal; Sapphire single crystal; Stress-strain analysis; Single crystals
Abstract :
[en] We report on the characterization of high quality sapphire single crystals suitable for high-resolution X-ray optics at high energy. Investigations using rocking curve imaging reveal the crystals to be of uniformly good quality at the level of ∼10-4 in lattice parameter variations, δd/d. However, investigations using backscattering rocking curve imaging with a lattice spacing resolution of δd/d∼5×10-8 show very diverse quality maps for all crystals. Our results highlight nearly ideal areas with an edge length of 0.2-0.5 mm in most crystals, but a comparison of the back reflection peak positions shows that even neighboring ideal areas exhibit a relative difference in the lattice parameters on the order of δd/d=10- 20×10-8; this is several times larger than the rocking curve width. Stress-strain analysis suggests that an extremely stringent limit on the strain at a level of ∼100 kPa in the growth process is required in order to produce crystals with large areas of the quality required for X-ray optics at high energy. © 2017 Author(s).
Disciplines :
Space science, astronomy & astrophysics
Author, co-author :
Jafari, A.;  Jülich Centre for Neutron Science, JCNS and Peter Grünberg Institute PGI, JARA-FIT, Forschungszentrum Jülich GmbH, Jülich, D-52425, Germany, ESRF- the European Synchrotron, Grenoble Cedex 9, F-38043, France, Faculté des Sciences, Université de Liège, Liège, B-4000, Belgium
Sergueev, I.;  Deutsches Elektronen-Synchrotron, Hamburg, D-22607, Germany
Bessas, D.;  ESRF- the European Synchrotron, Grenoble Cedex 9, F-38043, France
Klobes, B.;  Jülich Centre for Neutron Science, JCNS and Peter Grünberg Institute PGI, JARA-FIT, Forschungszentrum Jülich GmbH, Jülich, D-52425, Germany
Roschin, B. S.;  Shubnikov Institute of Crystallography RAS, Leninskii pr-t 59, Moscow, 119333, Russian Federation
Asadchikov, V. E.;  Shubnikov Institute of Crystallography RAS, Leninskii pr-t 59, Moscow, 119333, Russian Federation, Lomonosov Moscow State University, Faculty of Physics, 1-2 Leninskiye Gory, Moscow, 119991, Russian Federation
Alexeev, P.;  Jülich Centre for Neutron Science, JCNS and Peter Grünberg Institute PGI, JARA-FIT, Forschungszentrum Jülich GmbH, Jülich, D-52425, Germany, Deutsches Elektronen-Synchrotron, Hamburg, D-22607, Germany
Härtwig, J.;  ESRF- the European Synchrotron, Grenoble Cedex 9, F-38043, France, Department of Physics, Faculty of Science, University of Johannesburg, Johannesburg, South Africa
Chumakov, A. I.;  ESRF- the European Synchrotron, Grenoble Cedex 9, F-38043, France
Wille, H.-C.;  Deutsches Elektronen-Synchrotron, Hamburg, D-22607, Germany
Hermann, Raphael ;  Université de Liège - ULiège
Language :
English
Title :
Rocking curve imaging of high quality sapphire crystals in backscattering geometry
Publication date :
2017
Journal title :
Journal of Applied Physics
ISSN :
0021-8979
eISSN :
1089-7550
Publisher :
American Institute of Physics, United States - New York
Volume :
121
Issue :
4
Pages :
044901
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 08 November 2020

Statistics


Number of views
51 (1 by ULiège)
Number of downloads
1 (1 by ULiège)

Scopus citations®
 
9
Scopus citations®
without self-citations
5
OpenCitations
 
13
OpenAlex citations
 
11

publications
0
supporting
0
mentioning
0
contrasting
0
Smart Citations
0
0
0
0
Citing PublicationsSupportingMentioningContrasting
View Citations

See how this article has been cited at scite.ai

scite shows how a scientific paper has been cited by providing the context of the citation, a classification describing whether it supports, mentions, or contrasts the cited claim, and a label indicating in which section the citation was made.

Bibliography


Similar publications



Contact ORBi