Actions for Group structure and weighting function effects on neutron penetration through thick sodium-iron shields [electronic resource].

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Group structure and weighting function effects on neutron penetration through thick sodium-iron shields [electronic resource].

Published
Oak Ridge, Tenn. : Oak Ridge National Laboratory, 1987.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
Physical Description
Pages: 11 : digital, PDF file
Additional Creators
Oak Ridge National Laboratory and United States. Department of Energy. Office of Scientific and Technical Information
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Summary
The effects of group structures and weighting functions on neutron penetration through a thick Na-Fe geometry are studied. The recommended broad-group (61-neutron/23-gamma-ray) and few-group (22-neutron/10-gamma-ray) structures are tailored to the sodium and iron resonances, windows, and capture gamma-ray spectra. The best weighting functions are shown to be fine-group fluxes selected from a few key locations in the geometry. These group structures and weighting functions, relative to existing group structures and conventional weighting functions, improve the accuracy of the computed 61-neutron-group Bonner ball responses by up to one hundred percent and of the computed 22-neutron-group results by up to six hundred percent.
Report Numbers
E 1.99:conf-870405-2
conf-870405-2
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Note
Published through SciTech Connect.
01/01/1987.
"conf-870405-2"
"DE86015178"
Topical conference on theory and practice in radiation protection and shielding, Knoxville, TN, USA, 22 Apr 1987.
Ingersoll, D.T.; Fu, C.Y.
Funding Information
AC05-84OR21400
View MARC record | catkey: 14672538