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Anomalies in the Charge Yields of Fission Fragments from the $^{238}$U(n,f) Reaction

hal.structure.identifierInstitut de Physique Nucléaire d'Orsay [IPNO]
dc.contributor.authorWILSON, J.N.
hal.structure.identifierInstitut de Physique Nucléaire d'Orsay [IPNO]
dc.contributor.authorLEBOIS, M.
hal.structure.identifierInstitut de Physique Nucléaire d'Orsay [IPNO]
dc.contributor.authorQI, L.
dc.contributor.authorAMADOR-CELDRAN, P.
dc.contributor.authorBLEUEL, D.
hal.structure.identifierLaboratoire de physique subatomique et des technologies associées [SUBATECH]
dc.contributor.authorBRIZ, J.A.
dc.contributor.authorCARROLL, R.
dc.contributor.authorCATFORD, W.
dc.contributor.authorDE WITTE, H.
hal.structure.identifierInstitut de Recherches sur les lois Fondamentales de l'Univers [IRFU]
dc.contributor.authorDOHERTY, D.T.
dc.contributor.authorELOIRDI, R.
hal.structure.identifierCentre de Sciences Nucléaires et de Sciences de la Matière [CSNSM]
dc.contributor.authorGEORGIEV, G.
hal.structure.identifierInstitut de Physique Nucléaire d'Orsay [IPNO]
dc.contributor.authorGOTTARDO, A.
hal.structure.identifierCentre de Sciences Nucléaires et de Sciences de la Matière [CSNSM]
dc.contributor.authorGOASDUFF, A.
dc.contributor.authorHADYŃSKA-KLĘK, K.
hal.structure.identifierCentre de Sciences Nucléaires et de Sciences de la Matière [CSNSM]
dc.contributor.authorHAUSCHILD, K.
dc.contributor.authorHESS, H.
dc.contributor.authorINGEBERG, V.
hal.structure.identifierCentre de Sciences Nucléaires et de Sciences de la Matière [CSNSM]
dc.contributor.authorKONSTANTINOPOULOS, T.
hal.structure.identifierCentre de Sciences Nucléaires et de Sciences de la Matière [CSNSM]
dc.contributor.authorLJUNGVALL, J.
hal.structure.identifierCentre de Sciences Nucléaires et de Sciences de la Matière [CSNSM]
dc.contributor.authorLOPEZ-MARTENS, A.
dc.contributor.authorLORUSSO, G.
hal.structure.identifierCentre de Sciences Nucléaires et de Sciences de la Matière [CSNSM]
dc.contributor.authorLOZEVA, R.
dc.contributor.authorLUTTER, R.
hal.structure.identifierDirection des Applications Militaires [DAM]
dc.contributor.authorMARINI, P.
hal.structure.identifierInstitut de Physique Nucléaire d'Orsay [IPNO]
dc.contributor.authorMATEA, I.
hal.structure.identifierInstitut de Recherches sur les lois Fondamentales de l'Univers [IRFU]
dc.contributor.authorMATERNA, T.
hal.structure.identifierCentre d'Etudes Nucléaires de Bordeaux Gradignan [CENBG]
dc.contributor.authorMATHIEU, L.
dc.contributor.authorOBERSTEDT, A.
dc.contributor.authorOBERSTEDT, S.
hal.structure.identifierInstitut de Recherches sur les lois Fondamentales de l'Univers [IRFU]
dc.contributor.authorPANEBIANCO, S.
dc.contributor.authorPODOLYÁK, Zs.
hal.structure.identifierLaboratoire de physique subatomique et des technologies associées [SUBATECH]
dc.contributor.authorPORTA, Amanda
dc.contributor.authorREGAN, P.H.
dc.contributor.authorREITER, P.
dc.contributor.authorREZYNKINA, K.
dc.contributor.authorROSE, S.J.
dc.contributor.authorSAHIN, E.
dc.contributor.authorSEIDLITZ, M.
hal.structure.identifierCEA Cadarache
dc.contributor.authorSEROT, O.
dc.contributor.authorSHEARMAN, R.
dc.contributor.authorSIEBECK, B.
dc.contributor.authorSIEM, S.
dc.contributor.authorSMITH, A.G.
dc.contributor.authorTVETEN, G.M.
hal.structure.identifierInstitut de Physique Nucléaire d'Orsay [IPNO]
dc.contributor.authorVERNEY, D.
dc.contributor.authorWARR, N.
dc.contributor.authorZEISER, F.
hal.structure.identifierInstitut de Recherches sur les lois Fondamentales de l'Univers [IRFU]
dc.contributor.authorZIELINSKA, M.
dc.date.issued2017
dc.identifier.issn0031-9007
dc.description.abstractEnFast-neutron-induced fission of $^{238}$U at an energy just above the fission threshold is studied with a novel technique which involves the coupling of a high-efficiency $\gamma$-ray spectrometer (MINIBALL) to an inverse-kinematics neutron source (LICORNE) to extract charge yields of fission fragments via $\gamma$-$\gamma$ coincidence spectroscopy. Experimental data and fission models are compared and found to be in reasonable agreement for many nuclei; however, significant discrepancies of up to 600% are observed, particularly for isotopes of Sn and Mo. This indicates that these models significantly overestimate the standard 1 fission mode and suggests that spherical shell effects in the nascent fission fragments are less important for low-energy fast-neutron-induced fission than for thermal neutron-induced fission. This has consequences for understanding and modeling the fission process, for experimental nuclear structure studies of the most neutron-rich nuclei, for future energy applications (e.g., Generation IV reactors which use fast-neutron spectra), and for the reactor antineutrino anomaly.
dc.language.isoen
dc.publisherAmerican Physical Society
dc.title.enAnomalies in the Charge Yields of Fission Fragments from the $^{238}$U(n,f) Reaction
dc.typeArticle de revue
dc.identifier.doi10.1103/PhysRevLett.118.222501
dc.subject.halPhysique [physics]/Physique Nucléaire Expérimentale [nucl-ex]
bordeaux.journalPhysical Review Letters
bordeaux.page222501
bordeaux.volume118
bordeaux.issue22
bordeaux.peerReviewedoui
hal.identifierhal-01554873
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-01554873v1
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