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E1- and E2-S of 12 alpha,gamma 0 16 O from gamma-ray angular distributions with a 4pi detector array

hal.structure.identifierCentre de Spectrométrie Nucléaire et de Spectrométrie de Masse [CSNSM]
hal.structure.identifierInstituto de Física [IDF]
dc.contributor.authorASSUNCAO, M.
hal.structure.identifierInstitut für Strahlenphysik [IFS]
dc.contributor.authorFEY, M.
hal.structure.identifierCentre de Spectrométrie Nucléaire et de Spectrométrie de Masse [CSNSM]
dc.contributor.authorLEFEBVRE-SCHUHL, A.
hal.structure.identifierCentre de Spectrométrie Nucléaire et de Spectrométrie de Masse [CSNSM]
dc.contributor.authorKIENER, J.
hal.structure.identifierCentre de Spectrométrie Nucléaire et de Spectrométrie de Masse [CSNSM]
dc.contributor.authorTATISCHEFF, V.
hal.structure.identifierInstitut für Strahlenphysik [IFS]
dc.contributor.authorHAMMER, J.W.
hal.structure.identifierInstitut de Recherches Subatomiques [IReS]
dc.contributor.authorBECK, C.
hal.structure.identifierCentre de Spectrométrie Nucléaire et de Spectrométrie de Masse [CSNSM]
dc.contributor.authorBOUKARI-PELISSIE, C.
hal.structure.identifierCentre de Spectrométrie Nucléaire et de Spectrométrie de Masse [CSNSM]
dc.contributor.authorCOC, A.
hal.structure.identifierCentre de Spectrométrie Nucléaire et de Spectrométrie de Masse [CSNSM]
dc.contributor.authorCORREIA, J.J.
hal.structure.identifierInstitut de Recherches Subatomiques [IReS]
dc.contributor.authorCOURTIN, S.
hal.structure.identifierKernfysisch Versneller Instituut [KVI]
hal.structure.identifierSNO [SNO]
dc.contributor.authorFLEUROT, F.
hal.structure.identifierInstitute of Nuclear Physics [INP]
dc.contributor.authorGALANOPOULOS, E.
hal.structure.identifierCentre de Spectrométrie Nucléaire et de Spectrométrie de Masse [CSNSM]
dc.contributor.authorGRAMA, C.
hal.structure.identifierInstitut de Recherches Subatomiques [IReS]
dc.contributor.authorHAAS, F.
hal.structure.identifierGesellschaft für Schwerionenforschung [GSI]
hal.structure.identifierInstitut de Physique Nucléaire d'Orsay [IPNO]
dc.contributor.authorHAMMACHE, F.
hal.structure.identifierCentre de Spectrométrie Nucléaire et de Spectrométrie de Masse [CSNSM]
hal.structure.identifierCentre d'Etudes Nucléaires de Bordeaux Gradignan [CENBG]
dc.contributor.authorHANNACHI, F.
hal.structure.identifierInstitute of Nuclear Physics [INP]
dc.contributor.authorHARISSOPULOS, S.
hal.structure.identifierCentre de Spectrométrie Nucléaire et de Spectrométrie de Masse [CSNSM]
dc.contributor.authorKORICHI, A.
hal.structure.identifierInstitut für Strahlenphysik [IFS]
dc.contributor.authorKUNZ, R.
hal.structure.identifierCentre de Spectrométrie Nucléaire et de Spectrométrie de Masse [CSNSM]
dc.contributor.authorLEDU, D.
hal.structure.identifierCentre de Spectrométrie Nucléaire et de Spectrométrie de Masse [CSNSM]
dc.contributor.authorLOPEZ-MARTENS, A.
hal.structure.identifierInstitut für Strahlenphysik [IFS]
dc.contributor.authorMALCHEREK, D.
hal.structure.identifierCentre de Spectrométrie Nucléaire et de Spectrométrie de Masse [CSNSM]
dc.contributor.authorMEUNIER, R.
hal.structure.identifierInstitute of Nuclear Physics [INP]
dc.contributor.authorPARADELLIS, Th.
hal.structure.identifierInstitut de Recherches Subatomiques [IReS]
dc.contributor.authorROUSSEAU, Marc
hal.structure.identifierInstitut de Recherches Subatomiques [IReS]
dc.contributor.authorROWLEY, N.
hal.structure.identifierPhysikalisches Institut [Tübingen]
dc.contributor.authorSTAUDT, G.
hal.structure.identifierInstitut de Recherches Subatomiques [IReS]
hal.structure.identifierRudjer Boskovic Institute [Zagreb]
dc.contributor.authorSZILNER, S.
hal.structure.identifierCentre de Spectrométrie Nucléaire et de Spectrométrie de Masse [CSNSM]
dc.contributor.authorTHIBAUD, J.P.
hal.structure.identifierInstitute of Isotopes [II]
hal.structure.identifierDepartment of Physics [DP]
dc.contributor.authorWEIL, J.L.
dc.date.issued2006
dc.identifier.issn2469-9985
dc.description.abstractEnA new experiment to determine the thermonuclear cross section of the 12C(alpha,gamma_0)16O reaction has been performed in regular kinematics using an intense alpha-particle beam of up to 340 muA from the Stuttgart DYNAMITRON. For the first time a 4pi-Germanium-detector setup has been used to measure the angular distribution of the gamma rays at all angles simultaneously. It consisted of an array of 9 EUROGAM HPGe detectors in close geometry, actively shielded individually with BGO crystals. The 12C targets were isotopically enriched by magnetic separation during implantation. The depth profiles of the implanted carbon in the 12C targets have been determined by Rutherford backscattering for purposes of cross section normalization and absolute determination of the E1 and E2 S factors. Angular distributions of the gamma decay to the 16O ground state have been measured in the energy range E_c.m.= 1.30-2.78 MeV and in the angular range (lab.) 30-130 degre. From these distributions, astrophysical E1 and E2 S-factor functions vs. energy have been calculated, both of which are indispensable for the modeling of this reaction and the extrapolation towards lower energies. The separation of the E1 and E2 capture channels has been done both by taking the phase value phi_12 as a free parameter and by fixing it using the results of elastic alpha-particle scattering on 12C in the same energy range.
dc.language.isoen
dc.publisherAmerican Physical Society
dc.subject.ennuclear astrophysics
dc.subject.encross-section measurements
dc.subject.en12C(alpha
dc.subject.engamma)16O
dc.subject.enthermonuclear stellar burning
dc.subject.enE1 S factor
dc.subject.enE2 S factor
dc.subject.en4pi gamma Germainum array
dc.subject.engamma angular distributions
dc.title.enE1- and E2-S of 12 alpha,gamma 0 16 O from gamma-ray angular distributions with a 4pi detector array
dc.typeArticle de revue
dc.identifier.doi10.1103/PhysRevC.73.055801
dc.subject.halPhysique [physics]/Astrophysique [astro-ph]/Cosmologie et astrophysique extra-galactique [astro-ph.CO]
dc.subject.halPlanète et Univers [physics]/Astrophysique [astro-ph]
bordeaux.journalPhysical Review C
bordeaux.page055801-19
bordeaux.volume73
bordeaux.peerReviewedoui
hal.identifierin2p3-00067806
hal.version1
hal.popularnon
hal.audienceNon spécifiée
hal.origin.linkhttps://hal.archives-ouvertes.fr//in2p3-00067806v1
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