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Search for beta+EC and ECEC processes in 74Se

hal.structure.identifierInstitute of Theoretical and Experimental Physics [Moscow] [ITEP]
dc.contributor.authorBARABASH, A.S.
hal.structure.identifierCentre d'Etudes Nucléaires de Bordeaux Gradignan [CENBG]
dc.contributor.authorHUBERT, P.
hal.structure.identifierCentre d'Etudes Nucléaires de Bordeaux Gradignan [CENBG]
dc.contributor.authorNACHAB, A.
hal.structure.identifierInstitute of Theoretical and Experimental Physics [Moscow] [ITEP]
dc.contributor.authorUMATOV, V.
dc.date.issued2007
dc.identifier.issn0375-9474
dc.description.abstractEnLimits on double-beta processes in 74Se have been obtained using a 400 cm3 HPGe detector and an external source consisting of natural selenium powder. In particular, limit with a 90% C.L. on the 74Se half-life of 5.5×1018 yr for ECEC(0ν) transitions to the Click to view the MathML source excited state in 74Ge (1204.2 keV) has been obtained. This transition is discussed in association with a possible enhancement of the decay rate, in this case by several orders of magnitude, because the ECEC(0ν) process is nearly degenerate with an excited state in the daughter nuclide. Prospects for investigating such processes in future experiments are discussed. For other β+EC and ECEC transitions (to the ground and excited states) obtained limits are on the level not, vert, similar1018−1019 yr.
dc.language.isoen
dc.publisherElsevier
dc.title.enSearch for beta+EC and ECEC processes in 74Se
dc.typeArticle de revue
dc.identifier.doi10.1016/j.nuclphysa.2007.01.002
dc.subject.halPhysique [physics]/Physique Nucléaire Expérimentale [nucl-ex]
dc.identifier.arxivhep-ex/0610046
bordeaux.journalNuclear Physics A
bordeaux.page371-380
bordeaux.volume785
bordeaux.peerReviewedoui
hal.identifierin2p3-00139983
hal.version1
hal.popularnon
hal.audienceNon spécifiée
dc.subject.esDouble-beta decay
dc.subject.esDouble electron capture
hal.origin.linkhttps://hal.archives-ouvertes.fr//in2p3-00139983v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Nuclear%20Physics%20A&rft.date=2007&rft.volume=785&rft.spage=371-380&rft.epage=371-380&rft.eissn=0375-9474&rft.issn=0375-9474&rft.au=BARABASH,%20A.S.&HUBERT,%20P.&NACHAB,%20A.&UMATOV,%20V.&rft.genre=article


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