Recent Advances in Modeling Fission Cross Sections over Intermediate Structures

Recent Advances in Modeling Fission Cross Sections over Intermediate Structures

More accurate fission cross section calculations in presence of underlying intermediate structure are strongly desired. This paper recalls the common approximations used below the fission threshold and quantifies their impact. In particular, an exact expanded R-matrix Monte Carlo calculation of t...

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Main Authors: Bouland O., Eric Lynn J.E., Talou P.
Format: Article
Language:English
Published: EDP Sciences 2010-03-01
Series:EPJ Web of Conferences
Online Access:http://dx.doi.org/10.1051/epjconf/20100208001
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spelling doaj-546305fbb9924197b1415769e8d06b7f2021-08-02T20:05:59ZengEDP SciencesEPJ Web of Conferences2100-014X2010-03-0120800110.1051/epjconf/20100208001Recent Advances in Modeling Fission Cross Sections over Intermediate StructuresBouland O.Eric Lynn J.E.Talou P.More accurate fission cross section calculations in presence of underlying intermediate structure are strongly desired. This paper recalls the common approximations used below the fission threshold and quantifies their impact. In particular, an exact expanded R-matrix Monte Carlo calculation of the intermediate structure, deeply mixed with the fluctuations of the class-I and II decay amplitudes, is shown. This paper also insists on the microscopic structure of the level densities as a function of the nucleus deformation and show preliminary neutron induced fission cross section calculations for 239Pu and 240Pu using newly calculated combinatorial level densities. Comparisons with recent evaluated and measured fission cross sections are made. http://dx.doi.org/10.1051/epjconf/20100208001
collection DOAJ
language English
format Article
sources DOAJ
author Bouland O.
Eric Lynn J.E.
Talou P.
spellingShingle Bouland O.
Eric Lynn J.E.
Talou P.
Recent Advances in Modeling Fission Cross Sections over Intermediate Structures
EPJ Web of Conferences
author_facet Bouland O.
Eric Lynn J.E.
Talou P.
author_sort Bouland O.
title Recent Advances in Modeling Fission Cross Sections over Intermediate Structures
title_short Recent Advances in Modeling Fission Cross Sections over Intermediate Structures
title_full Recent Advances in Modeling Fission Cross Sections over Intermediate Structures
title_fullStr Recent Advances in Modeling Fission Cross Sections over Intermediate Structures
title_full_unstemmed Recent Advances in Modeling Fission Cross Sections over Intermediate Structures
title_sort recent advances in modeling fission cross sections over intermediate structures
publisher EDP Sciences
series EPJ Web of Conferences
issn 2100-014X
publishDate 2010-03-01
description More accurate fission cross section calculations in presence of underlying intermediate structure are strongly desired. This paper recalls the common approximations used below the fission threshold and quantifies their impact. In particular, an exact expanded R-matrix Monte Carlo calculation of the intermediate structure, deeply mixed with the fluctuations of the class-I and II decay amplitudes, is shown. This paper also insists on the microscopic structure of the level densities as a function of the nucleus deformation and show preliminary neutron induced fission cross section calculations for 239Pu and 240Pu using newly calculated combinatorial level densities. Comparisons with recent evaluated and measured fission cross sections are made.
url http://dx.doi.org/10.1051/epjconf/20100208001
work_keys_str_mv AT boulando recentadvancesinmodelingfissioncrosssectionsoverintermediatestructures
AT ericlynnje recentadvancesinmodelingfissioncrosssectionsoverintermediatestructures
AT taloup recentadvancesinmodelingfissioncrosssectionsoverintermediatestructures
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