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Relative proton and γ widths of astrophysically important states in $^{30}$S studied in the β-delayed decay of $^{31}$Ar

dc.contributor.authorT. KOLDSTE, G.
hal.structure.identifierNoyaux exotiques [NEX]
dc.contributor.authorBLANK, Bertram
dc.contributor.authorBORGE, M.J.G.
dc.contributor.authorBRIZ, J.A.
dc.contributor.authorCARMONA-GALLARDO, M.
dc.contributor.authorFRAILE, L.M.
dc.contributor.authorFYNBO, H.O.U.
hal.structure.identifierNoyaux exotiques [NEX]
dc.contributor.authorGIOVINAZZO, J.
dc.contributor.authorJOHANSEN, J.G.
dc.contributor.authorJOKINEN, A.
dc.contributor.authorJONSON, B.
hal.structure.identifierNoyaux exotiques [NEX]
dc.contributor.authorKURTURKIAN-NIETO, T.
dc.contributor.authorH. KUSK, J.
dc.contributor.authorNILSSON, T.
dc.contributor.authorPEREA, A.
dc.contributor.authorPESUDO, V.
dc.contributor.authorPICADO, E.
dc.contributor.authorRIISAGER, K.
dc.contributor.authorSAASTAMOINEN, A.
dc.contributor.authorTENGBLAD, O.
hal.structure.identifierGrand Accélérateur National d'Ions Lourds [GANIL]
dc.contributor.authorTHOMAS, J.C.
hal.structure.identifierEuropean Organization for Nuclear Research [CERN]
dc.contributor.authorVAN DE WALLE, J.
dc.date.issued2013
dc.identifier.issn2469-9985
dc.description.abstractEnResonances just above the proton threshold in 30S affect the 29P(p, γ )30S reaction under astrophysical conditions. The (p,γ )-reaction rate is currently determined indirectly and depends on the properties of the relevant resonances. We present here a method for finding the ratio between the proton and γ partial widths of resonances in 30S. The widths are determined from the β2p- and βpγ -decay of 31Ar, which is produced at the ISOLDE radioactive ion beam facility at the European research organization CERN. Experimental limits on the ratio between the proton and γ partial widths for astrophysical relevant levels in 30S have been found for the first time. A level at 4689.2(24) keV is identified in the γ spectrum, and an upper limit on the p/ γ ratio of 0.26 (95% C.L.) is found. In the two-proton spectrum two levels at 5227(3) keV and 5847(4) keV are identified. These levels were previously seen to γ decay and upper limits on the γ/ p ratio of 0.5 and 9, respectively, (95% C.L.) are found, where the latter differs from previous calculations.
dc.language.isoen
dc.publisherAmerican Physical Society
dc.title.enRelative proton and γ widths of astrophysically important states in $^{30}$S studied in the β-delayed decay of $^{31}$Ar
dc.typeArticle de revue
dc.identifier.doi10.1103/PhysRevC.87.055808
dc.subject.halPhysique [physics]/Physique Nucléaire Expérimentale [nucl-ex]
dc.identifier.arxiv1303.1940
bordeaux.journalPhysical Review C
bordeaux.page055808
bordeaux.volume87
bordeaux.peerReviewedoui
hal.identifierin2p3-00827313
hal.version1
hal.popularnon
hal.audienceNon spécifiée
hal.origin.linkhttps://hal.archives-ouvertes.fr//in2p3-00827313v1
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