Experimental evidence for subshell closure in He-8 and indication of a resonant state in He-7 below 1 MeV

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dc.contributor.authorSkaza, F.en
dc.contributor.authorLapoux, V.en
dc.contributor.authorKeeley, N.en
dc.contributor.authorAlamanos, N.en
dc.contributor.authorPollacco, E. C.en
dc.contributor.authorAuger, F.en
dc.contributor.authorDrouart, A.en
dc.contributor.authorGillibert, A.en
dc.contributor.authorBeaumel, D.en
dc.contributor.authorBecheva, E.en
dc.contributor.authorBlumenfeld, Y.en
dc.contributor.authorDelaunay, F.en
dc.contributor.authorGiot, L.en
dc.contributor.authorKemper, K. W.en
dc.contributor.authorNalpas, L.en
dc.contributor.authorObertelli, A.en
dc.contributor.authorPakou, A.en
dc.contributor.authorRaabe, R.en
dc.contributor.authorRoussel-Chomaz, P.en
dc.contributor.authorSida, J. L.en
dc.contributor.authorScarpaci, J. A.en
dc.contributor.authorStepantsov, S.en
dc.contributor.authorWolski, R.en
dc.date.accessioned2015-11-24T18:28:49Z
dc.date.available2015-11-24T18:28:49Z
dc.identifier.issn0556-2813-
dc.identifier.urihttps://olympias.lib.uoi.gr/jspui/handle/123456789/16188
dc.rightsDefault Licence-
dc.subjectmodelen
dc.subjectscatteringen
dc.subjectnucleien
dc.titleExperimental evidence for subshell closure in He-8 and indication of a resonant state in He-7 below 1 MeVen
heal.abstractThe spectroscopy of the unstable He-8 and unbound He-7 nuclei is investigated via the p(He-8, d) transfer reaction with a 15.7A MeV He-8 beam from the SPIRAL facility. The emitted deuterons were detected by the telescope array MUST. The results are analyzed within the coupled-channels Born approximation framework, and a spectroscopic factor (CS)-S-2=4.4 +/- 1.3 for neutron pickup to the He-7(g.s.) is deduced. This value is consistent with a full p3/2 subshell for He-8. Tentative evidence for the first excited state of He-7 is found at E-*=0.9 +/- 0.5 MeV (width Gamma=1.0 +/- 0.9 MeV). The second one is observed at a position compatible with previous measurements, E-*=2.9 +/- 0.1 MeV. Both are in agreement with previous separate measurements. The reproduction of the first excited state below 1 MeV would be a challenge for the most sophisticated nuclear theories.en
heal.accesscampus-
heal.fullTextAvailabilityTRUE-
heal.identifier.primaryDoi 10.1103/Physrevc.73.044301-
heal.identifier.secondary<Go to ISI>://000237157300013-
heal.identifier.secondaryhttp://prc.aps.org/abstract/PRC/v73/i4/e044301-
heal.journalNamePhysical Review Cen
heal.journalTypepeer reviewed-
heal.languageen-
heal.publicationDate2006-
heal.recordProviderΠανεπιστήμιο Ιωαννίνων. Σχολή Επιστημών και Τεχνολογιών. Τμήμα Βιολογικών Εφαρμογών και Τεχνολογιώνel
heal.typejournalArticle-
heal.type.elΆρθρο Περιοδικούel
heal.type.enJournal articleen

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