Journal
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
Volume 675, Issue -, Pages 29-33Publisher
ELSEVIER
DOI: 10.1016/j.nima.2012.01.070
Keywords
Ultracold neutrons; Cryogenic moderators; Neutron scattering
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The extraction efficiency of ultracold neutrons from cryogenic moderators depends critically on the neutron transparency of the moderator material. A Monte Carlo simulation of the probability of the UCN going out from non-ideal (disordered) solid deuterium crystals has been performed. It was based on the use of a correlation function describing the density fluctuations in a disordered material, the latter being inferred from the measured very low neutron energy total cross-sections for this material. (C) 2012 Elsevier B.V. All rights reserved.
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