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Intensity and resolution effects in converging multichannel collimators for SANS by Monte Carlo simulation
Author(s) -
Falcão A. N.,
Margaça F. M. A.,
Carvalho F. G.
Publication year - 2003
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/s0021889803014948
Subject(s) - monte carlo method , collimator , optics , physics , channel (broadcasting) , resolution (logic) , neutron , beam (structure) , divergence (linguistics) , intensity (physics) , computational physics , nuclear physics , computer science , mathematics , telecommunications , linguistics , statistics , philosophy , artificial intelligence
A study of the contribution of the individual channels of a converging multichannel collimator to the operation of the device is carried out by means of a Monte Carlo computer simulation. The simulation shows that the coupling between the divergence of the incident neutron beam and the inclination of the individual CMC channel axis relative to the beam direction modulates the channel performance as far as intensity and resolution of the transmitted neutrons are concerned. While this does not impair in any significant way the usefulness of the device, the results are helpful to the designer.