The ENDF/B-IV Representation of the Uranium-238, Total Neutron Cross Section in the Resolved Resonance Energy Region
作者:
SaussureG. de,
OlsenD. K.,
PerezR. B.,
期刊:
Nuclear Science and Engineering
(Taylor Available online 1976)
卷期:
Volume 61,
issue 4
页码: 496-506
ISSN:0029-5639
年代: 1976
DOI:10.13182/NSE76-A14486
出版商: Taylor&Francis
数据来源: Taylor
摘要:
AbstractThe ENDF/B-IV prescription fails to represent correctly the238U total (and scattering) cross section between the levels of the resolved range. We show how this representation can be improved by properly accounting for the contribution of levels outside the resolved region to the cross section at energies inside the resolved region, and by substituting the more precise multi-level Breit-Wigner formula for the presently used single-level formula. We illustrate the importance of computing accurately the minima in the total cross section by comparing values of the self-shielded capture resonance integral computed with ENDF/B-IV and with a more accurate cross-section model.
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