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Intermediate structure in unresolved resonances of fissile and fertile nuclides [electronic resource].

Published
Los Alamos, N.M. : Los Alamos Scientific Laboratory, 1980.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
Physical Description
Pages: 13 : digital, PDF file
Additional Creators
Los Alamos Scientific Laboratory and United States. Department of Energy. Office of Scientific and Technical Information
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Summary
Evidence for the existence of intermediate structure in the unresolved resonance fission and capture cross sections of /sup 235/U and in the capture cross section of /sup 238/U is reviewed. Certain of the statistical tests that have been used are known to be compromised by finite resolution when applied to unresolved resonance data, but it is concluded that over most of the energy range the test results are valid. Parity assignments for the structure in /sup 238/U(n, ..gamma..) suggest that s-wave neutron absorption is responsible for much of the structure. If this is the case, the cross section fluctuations are most likely due to fluctuations in the radiative capture width, rather than in the neutron width. Finally, the practical effect of the possible presence of width correlations in fertile and fissile nuclides is addressed. 1 figure, 1 table.
Report Numbers
E 1.99:la-ur-80-2675
E 1.99: conf-800942-11
conf-800942-11
la-ur-80-2675
Subject(s)
Other Subject(s)
Note
Published through SciTech Connect.
01/01/1980.
"la-ur-80-2675"
" conf-800942-11"
ANS topical meeting on 1980 advances in reactor physics and shielding, Sun Valley, ID, USA, 14 Sep 1980.
Moore, M.S.
Funding Information
W-7405-ENG-36
View MARC record | catkey: 14673100