γ-ray spectroscopy of neutron-rich 40S

Yrast states up to (6+) in the neutron-rich 40S nucleus have been studied using binary grazing reactions produced by the interaction of a 215 MeV beam of 36S ions with a thin 208Pb target. The novel experimental setup that combines the large acceptance magnetic spectrometer, PRISMA, and the high-eff...

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Veröffentlicht in:Physical review. C 2010-05, Vol.81
Hauptverfasser: M. Wang, Z., Chapman, R., Liang, X., Haas, F., Azaiez, F., R. Behera, B., Burns, M., Caurier, E., Corradi, L., Curien, D., N. Deacon, A., Dombrádi, Zs, Farnea, E., Fioretto, E., Gadea, A., Hodsdon, A., Ibrahim, F., Jungclaus, A., Keyes, K., Kumar, V., Latina, A., Lunardi, S., Mărginean, N., Montagnoli, G., R. Napoli, D., Nowacki, F., Ollier, J., O'Donnell, D., Papenberg, A., Pollarolo, G., Salsac, M.-D., Scarlassara, F., F. Smith, J., M. Spohr, K., Stanoiu, M., M. Stefanini, A., Szilner, S., Trotta, M., Verney, D.
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Sprache:eng
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Zusammenfassung:Yrast states up to (6+) in the neutron-rich 40S nucleus have been studied using binary grazing reactions produced by the interaction of a 215 MeV beam of 36S ions with a thin 208Pb target. The novel experimental setup that combines the large acceptance magnetic spectrometer, PRISMA, and the high-efficiency γ-ray detection array, CLARA, was used. A new γ-ray transition at an energy of 1572 keV was observed and tentatively assigned to the (6+)→(4+) transition. A comparison of experimental observations and the results of large-scale 0ℏω sd-pf shell-model calculations indicates that one- and two-proton excitations from the 2s1/2 to the 1d3/2 orbitals play an important role in reproducing the 40S yrast level structure and the published B(E2;0g.s.+→21+) value. The structure of the yrast states of the even-A isotopes of sulfur is interpreted in terms of the configurations of valence protons and neutrons within the context of large-scale 0ℏω sd-pf shell-model calculations.
ISSN:2469-9985
2469-9993
DOI:10.1103/PhysRevC.81.054305