First in-beam γ -ray study of the level structure of neutron-rich S39
Year: 2016
Type: article
Abstract: The neutron-rich 39S nucleus has been studied using binary grazing reactions produced by the interaction of a 215-MeV beam of 36S ions with a thin 208Pb target. The magnetic spectrometer, PRISMA, and the γ-ray array, CLARA, were used in the measurements. Gamma-ray transitions of the following energies were observed: 339, 398, 466, 705, 1517, 1656, and 1724 keV. Five of the observed transitions have been tentatively assigned to the decay of excited states with spins up to (11/2−). The results of a state-of-the-art shell-model calculation of the level scheme of 39S using the SDPF-U effective interaction are also presented. The systematic behavior of the excitation energy of the first 11/2− states in the odd-A isotopes of sulfur and argon is discussed in relation to the excitation energy of the first excited 2+ states of the adjacent even-A isotopes. The states of 39S that have the components in their wave functions corresponding to three neutrons in the 1ƒ7/2 orbital outside the N = 20 core have also been discussed within the context of the 0 ℏω shell-model calculations presented here.
Source: Physical Review C
Authors: R. Chapman, Z. M. Wang, M. Bouhelal, F. Haas, X. Liang, F. Azaiez, B. R. Behera, M. Burns, E. Caurier, L. Corradi, D. Curien, A. N. Deacon, Zs. Dombrádi, E. Farnea, E. Fioretto, A. Gadea, A. Hodsdon, F. Ibrahim, A. Jungclaus, K. Keyes, V. Kumar, S. Lunardi, N. Mărginean, 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
Institutions: Scottish Universities Physics Alliance, University of the West of Scotland, Université Larbi Tébessi, Centre National de la Recherche Scientifique, Institut Pluridisciplinaire Hubert Curien, Institut National de Physique Nucléaire et de Physique des Particules, Université de Strasbourg, Université Paris-Sud, Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Legnaro, University of Manchester, HUN-REN Institute for Nuclear Research, University of Padua, Istituto Nazionale di Fisica Nucleare, Sezione di Padova, Consejo Superior de Investigaciones Científicas, Instituto de Estructura de la Materia, Horia Hulubei National Institute for R and D in Physics and Nuclear Engineering, Daresbury Laboratory, Istituto Nazionale di Fisica Nucleare, Sezione di Torino, University of Turin, Commissariat à l'Énergie Atomique et aux Énergies Alternatives, Ruđer Bošković Institute
Language: Latvian
Subfield: Nuclear and High Energy Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W2510587393