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Neutron diffraction studies of a double-crystal (+n,-m) setting containing a fully asymmetric diffraction geometry of a bent perfect crystal with output beam expansion.
- Source :
-
Journal of Applied Crystallography . Apr2014, Vol. 47 Issue 2, p599-605. 7p. - Publication Year :
- 2014
-
Abstract
- The neutron diffraction properties of a double-crystal (+n,-m) setting, which contains a bent perfect Si(311) crystal in the fully asymmetric diffraction (FAD) geometry with output beam expansion and a bent perfect Si(220) crystal in the symmetric diffraction geometry, are presented. Generally, there are two possibilities for the FAD geometry: either with output beam compression or with output beam expansion. In this case, attention has been focused on the latter. The properties of the (+n,-m) double-bent-crystal arrangement of a bent perfect crystal FAD Si(311) geometry, in combination with a bent Si(220) crystal slab in the symmetric diffraction geometry, were studied. It was found that, after beam expansion, this FAD geometry can provide a monochromatic beam of rather large cross section but very small divergence. [ABSTRACT FROM AUTHOR]
- Subjects :
- *NEUTRON diffraction
*CRYSTALS
*GEOMETRY
*SILICON crystals
*DIFFRACTION patterns
Subjects
Details
- Language :
- English
- ISSN :
- 00218898
- Volume :
- 47
- Issue :
- 2
- Database :
- Academic Search Index
- Journal :
- Journal of Applied Crystallography
- Publication Type :
- Academic Journal
- Accession number :
- 108776502
- Full Text :
- https://doi.org/10.1107/S1600576714001964