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Instrumental line shapes in neutron powder diffraction with focusing monochromators
Author(s) -
Stoica A. D.,
Popovici M.,
Yelon W. B.
Publication year - 2000
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/s0021889899014454
Subject(s) - monochromator , optics , diffractometer , line (geometry) , monte carlo method , computation , bent molecular geometry , neutron , neutron diffraction , diffraction , physics , materials science , computational physics , computer science , geometry , algorithm , mathematics , nuclear physics , wavelength , scanning electron microscope , statistics , composite material
The optics of neutron powder diffractometers with bent‐crystal monochromators is considered with respect to the computation of instrumental line shapes, accounting for second‐order aberrations. A procedure of Monte Carlo simulation of instrumental line shapes has been developed. An analytical approximation of these shapes is described. Computational results for the case of the MURR diffractometer with position‐sensitive detection and a focusing silicon monochromator are presented.