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Measurement of the delayed-neutron multiplicity and time constants in the thermal neutron induced fission of 235 U at ILL

hal.structure.identifierCEA-Direction des Energies (ex-Direction de l'Energie Nucléaire) [CEA-DES (ex-DEN)]
dc.contributor.authorFOLIGNO, D.
hal.structure.identifierCEA-Direction des Energies (ex-Direction de l'Energie Nucléaire) [CEA-DES (ex-DEN)]
dc.contributor.authorLECONTE, P.
hal.structure.identifierCEA-Direction des Energies (ex-Direction de l'Energie Nucléaire) [CEA-DES (ex-DEN)]
dc.contributor.authorSEROT, Olivier
hal.structure.identifierCEA-Direction des Energies (ex-Direction de l'Energie Nucléaire) [CEA-DES (ex-DEN)]
dc.contributor.authorGESLOT, B.
hal.structure.identifierCEA-Direction des Energies (ex-Direction de l'Energie Nucléaire) [CEA-DES (ex-DEN)]
dc.contributor.authorDE IZARRA, G.
hal.structure.identifierCEA-Direction des Energies (ex-Direction de l'Energie Nucléaire) [CEA-DES (ex-DEN)]
dc.contributor.authorCHEBBOUBI, Abdelhazize
hal.structure.identifierCEA-Direction des Energies (ex-Direction de l'Energie Nucléaire) [CEA-DES (ex-DEN)]
dc.contributor.authorSARDET, A.
hal.structure.identifierCEA-Direction des Energies (ex-Direction de l'Energie Nucléaire) [CEA-DES (ex-DEN)]
dc.contributor.authorDIAKAKI, Maria
hal.structure.identifierCEA-Direction des Energies (ex-Direction de l'Energie Nucléaire) [CEA-DES (ex-DEN)]
dc.contributor.authorTAMAGNO, P.
hal.structure.identifierLaboratoire de Physique Subatomique et de Cosmologie [LPSC]
dc.contributor.authorBILLEBAUD, A.
hal.structure.identifierLaboratoire de physique corpusculaire de Caen [LPCC]
dc.contributor.authorLECOLLEY, R.-R.
hal.structure.identifierCentre d'Etudes Nucléaires de Bordeaux Gradignan [CENBG]
dc.contributor.authorSOLDNER, T.
hal.structure.identifierCentre d'Etudes Nucléaires de Bordeaux Gradignan [CENBG]
dc.contributor.authorKÖSTER, U.
hal.structure.identifierCentre d'Etudes Nucléaires de Bordeaux Gradignan [CENBG]
dc.contributor.authorMUTTI, Paolo
hal.structure.identifierCEA-Direction des Energies (ex-Direction de l'Energie Nucléaire) [CEA-DES (ex-DEN)]
dc.contributor.authorPEPINO, A.
hal.structure.identifierLaboratoire de Physique Subatomique et de Cosmologie [LPSC]
dc.contributor.authorMÉPLAN, Olivier
hal.structure.identifierLaboratoire de Physique Subatomique et de Cosmologie [LPSC]
dc.contributor.authorKESSEDJIAN, G.
hal.structure.identifierLaboratoire de physique corpusculaire de Caen [LPCC]
dc.contributor.authorLECOUEY, J.-L.
hal.structure.identifierCentre d'Etudes Nucléaires de Bordeaux Gradignan [CENBG]
dc.contributor.authorMATHIEU, L.
hal.structure.identifierLaboratoire de physique corpusculaire de Caen [LPCC]
dc.contributor.authorMARIE-NOURRY, N.
dc.date.issued2020
dc.date.conference2019-05-19
dc.description.abstractEnDelayed neutron (DN) data is essential in inherent reactor safety and reactor control since it is neededfor the estimation of the reactivity. Nowadays, discrepancies among the data in dierent international databases(JEFF, ENDF, JENDL) are large and bring excessive conservatism in the safety margins. The ALDEN experiment,built in a collaboration of CEA and CNRS, aimed at re-measuring the delayed-neutron data associatedwith several fissioning systems (average delayed-neutron yield and kinetic parameters). The measurement hasbeen performed with a long counter made of a polyethylene matrix and 16 3He proportional counters. Thefirst experimental campaign, with an 235U target, took place at ILL (Institut Laue-Langevin) at the beginningof September 2018. The data regression analysis gave an average delayed-neutron yield of 1.631E-02 1.4%DN/fiss, and a mean precursors half-life of 8.93 0.98% s. The results are consistent with the literature(WPEC-6), but they are aected by a much smaller uncertainty.
dc.language.isoen
dc.subject.endelayed-neutrons
dc.subject.enexperiment
dc.subject.endetector
dc.title.enMeasurement of the delayed-neutron multiplicity and time constants in the thermal neutron induced fission of 235 U at ILL
dc.typeCommunication dans un congrès
dc.identifier.doi10.1051/epjconf/202023918006
dc.subject.halPhysique [physics]/Physique Nucléaire Théorique [nucl-th]
dc.subject.halPhysique [physics]/Physique Nucléaire Expérimentale [nucl-ex]
bordeaux.page18006
bordeaux.volume239
bordeaux.countryCN
bordeaux.conference.cityBeijing
bordeaux.peerReviewedoui
hal.identifiercea-02972152
hal.version1
hal.invitednon
hal.proceedingsoui
hal.conference.organizerIAEA
hal.conference.end2019-05-24
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//cea-02972152v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.date=2020&rft.volume=239&rft.spage=18006&rft.epage=18006&rft.au=FOLIGNO,%20D.&LECONTE,%20P.&SEROT,%20Olivier&GESLOT,%20B.&DE%20IZARRA,%20G.&rft.genre=unknown


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