Experimental studies of dispersive double reflections excited in cylindrically bent perfect-crystal slabs at a constant neutron wavelength

Multiple Bragg reflections (MBRs), which can be realized in a bent perfect crystal (BPC) slab and are mutually in dispersive diffraction geometry, provide a monochromatic beam of excellent resolution. After identifying many MBR effects in a BPC Si crystal by using the method of θ–2θD scanning, we ha...

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Bibliographic Details
Published in:Journal of applied crystallography 2012-02, Vol.45 (1), p.98-105
Main Authors: Mikula, Pavol, Vrána, Miroslav, Šaroun, Jan, Davydov, Vadim, Em, Vyacheslav, Seong, Baek-Seok
Format: Article
Language:English
Subjects:
Beams (radiation)
bent perfect crystals
Crystal lattices
Crystallography
Crystals
Diffraction
Dispersion
Ge crystals
Mathematical analysis
multiple reflection
Neutrons
Reflection
Si crystals
Slabs
Vectors (mathematics)
Wavelengths
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Summary:Multiple Bragg reflections (MBRs), which can be realized in a bent perfect crystal (BPC) slab and are mutually in dispersive diffraction geometry, provide a monochromatic beam of excellent resolution. After identifying many MBR effects in a BPC Si crystal by using the method of θ–2θD scanning, we have turned our attention to the study of selected effects using the method of azimuthal rotation of the crystal lattice around the scattering vector of the primary reflection for a fixed chosen wavelength. In this paper, several azimuthal scans with the intention of possible practical exploitation for very high resolution diffractometry are presented.
ISSN:1600-5767
0021-8898
1600-5767
DOI:10.1107/S0021889811054124