γ-ray spectroscopy of neutron-rich ⁴⁰S

Wang, Z. M. et al. (2010) γ-ray spectroscopy of neutron-rich ⁴⁰S. Physical Review C, 81(5), 054305. (doi: 10.1103/PhysRevC.81.054305)

Abstract

Yrast states up to (6+) in the neutron-rich S40 nucleus have been studied using binary grazing reactions produced by the interaction of a 215 MeV beam of S36 ions with a thin Pb208 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 S40yrast level structure and the published B(E2;0+g.s.→2+1) value. The structure of the yrast states of the even-Aisotopes 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.

• Item Type: Articles
• Status: Published
• Refereed: Yes
• Glasgow Author(s) Enlighten ID: O'Donnell, Dr David
• Authors: 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., Dombrádi, Z., Farnea, E., Fioretto, E., Gadea, A., Hodsdon, A., Ibrahim, F., Jungclaus, A., Keyes, K., Kumar, V., Latina, A., Lunardi, S., Mărginean, 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, S., Trotta, M., and Verney, D.
• College/School: College of Science and Engineering > School of Physics and Astronomy
• Journal Name: Physical Review C
• Publisher: American Physical Society
• ISSN: 0556-2813
• ISSN (Online): 1089-490X