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High‐resolution diffraction using Larmor precession of polarized neutrons
Author(s) -
Rekveldt M. Theo,
Kraan Wicher,
Keller Thomas
Publication year - 2002
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/s0021889801017812
Subject(s) - larmor precession , optics , collimated light , diffraction , resolution (logic) , angular resolution (graph drawing) , neutron diffraction , physics , neutron , precession , scattering , nuclear physics , magnetic field , condensed matter physics , laser , mathematics , quantum mechanics , combinatorics , artificial intelligence , computer science
A new Larmor precession device, consisting of two separate precession modules, is introduced. It operates as a high‐resolution neutron diffractometer, without the need for a highly collimated beam, necessary in conventional high‐resolution neutron diffraction. The same instrument operates in different modes as an effective small‐angle scattering device or accurately determines the line profile, the lattice plane orientation or the angular spread in crystal orientations. A dramatic intensity gain can be obtained in all applications discussed, compared with the conventional analogues, owing to the possibility to use a relaxed wavelength and angular resolution. Experiments in the high‐resolution diffraction mode on Si and Al are discussed.