Thermal neutron scattering cross section measurements of light and heavy water

From National Research Council Canada

DOIResolve DOI: https://doi.org/10.12943/CNR.2016.00008
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Name affiliation
  1. National Research Council of Canada. Security and Disruptive Technologies
FormatText, Article
Journal titleCNL Nuclear Review
ISSN2369-6923
2369-6931
Physical description7 p.
Subjectthermal neutron scattering; cross section; triple-axis spectrometer
Abstract
Thermal neutron scattering cross-section measurements of heavy water (D2O) under ambient conditions were performed, for the first time, using a triple-axis spectrometer at the NRU reactor. The total cross section (σtot), as well as single (dσ/dΩ) and double differential (d2σ/dΩdE) scattering cross-sections were measured. Incident neutron energies from 15 meV to 50 meV, and scattering angles from 10° to 110° were covered. The experimental techniques and a new data analysis method based on Monte Carlo simulation to obtain the absolute cross sections are discussed, and the resulting cross-sections are compared with the Evaluated Nuclear Data File (ENDF/B-VII). A discrepancy between the existing data and the ENDF/B-VII evaluation was confirmed and resolved by a new model that was developed recently.
Publication date
PublisherCanadian Science Publishing
Noteyes
LanguageEnglish
Peer reviewedYes
NPARC number23001854
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Record created2017-04-21
Record modified2020-03-16
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