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The transmission of curved neutron guides with non‐perfect reflectivity
Author(s) -
Mildner D. F. R.,
Hammouda B.
Publication year - 1992
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/s0021889891009615
Subject(s) - reflectivity , transmission (telecommunications) , neutron , optics , exponential function , ray tracing (physics) , computational physics , x ray reflectivity , reflection (computer programming) , tracing , physics , mathematical analysis , mathematics , computer science , telecommunications , nuclear physics , programming language , operating system
Approximate analytic expressions for determining the transmission of neutron benders which take into account reflectivity losses using the mean number of reflections agree well with computer simulation results which track the neutron trajectories directly, provided that the reflectivity is high. The exact calculation which can be performed using exponential integral functions for any value of the reflectivity is presented. Ray‐tracing techniques for determining the transmission and number of reflections for non‐perfect reflectivity can therefore be replaced by direct calculation.