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A multi‐wavelength neutron monochromator system
Author(s) -
Cooper M. J.,
Forsyth J. B.
Publication year - 1971
Publication title -
journal of applied crystallography
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.429
H-Index - 162
ISSN - 1600-5767
DOI - 10.1107/s0021889871007076
Subject(s) - monochromator , optics , wavelength , germanium , neutron , rotation (mathematics) , diffraction , crystal (programming language) , transmission (telecommunications) , resolution (logic) , physics , materials science , optoelectronics , geometry , nuclear physics , computer science , telecommunications , mathematics , artificial intelligence , silicon , programming language
A neutron monochromator system is described which provides a choice of seven wavelengths in the range 0.88 to 2.63 Å and a facility for changing rapidly from one to another. Symmetrical transmission geometry is used for reflections in the [110] zone of a `squashed' germanium crystal and the wavelength is changed by a simple rotation of the crystal in its own plane. Experimental studies have confirmed the advantages which such a system can have for powder diffraction measurements when different experiments have different requirements in terms of the sinθ/λ range and the angular resolution.