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Computational Study of Scission Neutrons in Low-Energy Fission: Stationary and Time-Dependent Approaches

hal.structure.identifierHoria Hulubei National Institute of Physics and Nuclear Engineering [NIPNE]
dc.contributor.authorRIZEA, M.
hal.structure.identifierCentre d'Etudes Nucléaires de Bordeaux Gradignan [CENBG]
dc.contributor.authorCARJAN, N.
dc.date.issued2011-04
dc.identifier.issn1815-2406
dc.description.abstractEnThe emission of scission neutrons from fissioning nuclei is of high practical interest. To study this process we have used the sudden approximation and also a more realistic approach that takes into account the scission dynamics. Numerically, this implies the solution of the bi-dimensional Schrodinger equation, both stationary and time-dependent. To describe axially symmetric extremely deformed nuclear shapes, we have used the Cassini parametrization. The Hamiltonian is discretized by using finite difference approximations of the derivatives. The main computational challenges are the solution of algebraic eigenvalue problems and of linear systems with large sparse matrices. We have employed appropriate procedures (Arnoldi and bi-conjugate gradients). The numerical solutions have been used to evaluate physical quantities, like the number of emitted neutrons per scission event, the primary fragments' excitation energy and the distribution of the emission points.
dc.language.isoen
dc.publisherGlobal Science Press
dc.subject.ennon-standard finite differences
dc.title.enComputational Study of Scission Neutrons in Low-Energy Fission: Stationary and Time-Dependent Approaches
dc.typeArticle de revue
dc.identifier.doi10.4208/cicp.040210.270810a
dc.subject.halPhysique [physics]/Physique Nucléaire Théorique [nucl-th]
bordeaux.journalCommunications in Computational Physics
bordeaux.page917-936
bordeaux.volume9
bordeaux.peerReviewedoui
hal.identifierin2p3-00576967
hal.version1
hal.popularnon
hal.audienceNon spécifiée
dc.subject.itScission neutrons
dc.subject.itfission
dc.subject.itbi-dimensional Schrodinger equation
dc.subject.itstationary
dc.subject.ittime-dependent
dc.subject.itnon-standard finite differences.
hal.origin.linkhttps://hal.archives-ouvertes.fr//in2p3-00576967v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Communications%20in%20Computational%20Physics&rft.date=2011-04&rft.volume=9&rft.spage=917-936&rft.epage=917-936&rft.eissn=1815-2406&rft.issn=1815-2406&rft.au=RIZEA,%20M.&CARJAN,%20N.&rft.genre=article


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