Naslov
Gamma-ray spectroscopy of neutron-rich S-40

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

Izvornik
Physical review. C. Nuclear physics (0556-2813) 81 (2010); 054305, 7

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
grazing collsions ; 38Cl ; PRISMA+CLARA ; shell-model calculations

Sažetak
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 0hω 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+) 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 0hω sd-pf shell-model calculations.

Izvorni jezik
Engleski

Znanstvena područja
Fizika

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