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Energy Dependence of Prompt Fission Neutron Multiplicity in the $^{239}$Pu($n,f$) Reaction

hal.structure.identifierCentre d'Etudes Nucléaires de Bordeaux Gradignan [CENBG]
dc.contributor.authorMARINI, Paola
hal.structure.identifierDirection des Applications Militaires [DAM]
hal.structure.identifierLaboratoire Matière sous Conditions Extrêmes [LMCE]
dc.contributor.authorTAIEB, J.
hal.structure.identifierLos Alamos National Laboratory [LANL]
dc.contributor.authorNEUDECKER, D.
hal.structure.identifierDirection des Applications Militaires [DAM]
hal.structure.identifierLaboratoire Matière sous Conditions Extrêmes [LMCE]
dc.contributor.authorBÉLIER, G.
hal.structure.identifierDirection des Applications Militaires [DAM]
hal.structure.identifierLaboratoire Matière sous Conditions Extrêmes [LMCE]
dc.contributor.authorCHATILLON, A.
hal.structure.identifierLaboratoire de physique corpusculaire de Caen [LPCC]
dc.contributor.authorETASSE, D.
hal.structure.identifierDirection des Applications Militaires [DAM]
hal.structure.identifierLaboratoire Matière sous Conditions Extrêmes [LMCE]
dc.contributor.authorLAURENT, B.
hal.structure.identifierDirection des Applications Militaires [DAM]
hal.structure.identifierLaboratoire Matière sous Conditions Extrêmes [LMCE]
dc.contributor.authorMORFOUACE, P.
hal.structure.identifierDirection des Applications Militaires [DAM]
dc.contributor.authorMORILLON, B.
hal.structure.identifierLos Alamos National Laboratory [LANL]
dc.contributor.authorDEVLIN, M.
hal.structure.identifierTheorical Division [LANL]
dc.contributor.authorGOMEZ, J. A.
hal.structure.identifierLos Alamos National Laboratory [LANL]
dc.contributor.authorHAIGHT, R. C.
hal.structure.identifierLos Alamos National Laboratory [LANL]
dc.contributor.authorKELLY, K. J.
hal.structure.identifierLos Alamos National Laboratory [LANL]
dc.contributor.authorO'DONNELL, J. M.
dc.date.accessioned2022-04-19T12:12:21Z
dc.date.available2022-04-19T12:12:21Z
dc.date.created2021-06-01
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/136765
dc.description.abstractEnAccurate multiplicities of prompt fission neutrons emitted in neutron-induced fission on a large energy range are essential for fundamental and applied nuclear physics. Measuring them to high precision for radioactive fissioning nuclides remains, however, an experimental challenge. In this work, the average prompt-neutron multiplicity emitted in the 239Pu(n,f) reaction was extracted as a function of the incident-neutron energy, over the range 1-700~MeV, with a novel technique, which allowed to minimize and correct for the main sources of bias and thus achieve unprecedented precision. At low energies, our data validate for the first time the ENDF/B-VIII.0 nuclear data evaluation with an independent measurement and reduce the evaluated uncertainty by up to $60\%$. This work opens up the possibility of precisely measuring prompt fission neutron multiplicities on highly radioactive nuclei relevant for an essential component of energy production world-wide.
dc.language.isoen
dc.title.enEnergy Dependence of Prompt Fission Neutron Multiplicity in the $^{239}$Pu($n,f$) Reaction
dc.typeDocument de travail - Pré-publication
dc.subject.halPhysique [physics]
dc.subject.halPhysique [physics]/Physique Nucléaire Expérimentale [nucl-ex]
dc.identifier.arxiv2109.14330
bordeaux.hal.laboratoriesCentre d'Études Nucléaires de Bordeaux Gradignan (CENBG)*
bordeaux.institutionUniversité de Bordeaux
bordeaux.institutionCNRS
hal.identifierhal-03368026
hal.version1
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-03368026v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.au=MARINI,%20Paola&TAIEB,%20J.&NEUDECKER,%20D.&B%C3%89LIER,%20G.&CHATILLON,%20A.&rft.genre=preprint


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