gamma-ray spectroscopy of neutron-rich S-40

Z. M. Wang, R. Chapman, X. Liang, F. Haas, F. Azaiez, B. R. Behera, M. Burns, E. Caurier, L. Corradi, D. Curien, A. N. Deacon, Zs. Dombradi, E. Farnea, E. Fioretto, A. Gadea, A. Hodsdon, F. Ibrahim, A. Jungclaus, K. Keyes, V. KumarA. Latina, S. Lunardi, N. Marginean, G. Montagnoli, D. R. Napoli, F. Nowacki, J. Ollier, D. O'Donnell, A. Papenberg, G. Pollarolo, M-D. Salsac, F. Scarlassara, J. F. Smith, K. M. Spohr, M. Stanoiu, A. M. Stefanini, S. Szilner, M. Trotta, D. Verney

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Abstract

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;0+g.s.→2+1) 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.
Original languageEnglish
Article number054305
JournalPhysical Review C
Volume81
Issue number5
DOIs
Publication statusPublished - 2010

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Wang, Z. M., Chapman, R., Liang, X., Haas, F., Azaiez, F., Behera, B. R., ... Verney, D. (2010). gamma-ray spectroscopy of neutron-rich S-40. Physical Review C, 81(5), [054305]. https://doi.org/10.1103/PhysRevC.81.054305