Spectroscopy of neutron-rich 34,35,36,37,38P populated in binary grazing reactions

R. Chapman, A. Hodsdon, M. Bouhelal, F. Haas, X. Liang, F. Azaiez, Z.M. Wang, B.R. Behera, M. Burns, E. Caurier, L. Corradi, D. Curien, A.N. Deacon, Zs. Dombrádi, E. Farnea, E. Fioretto, A. Gadea, F. Ibrahim, A. Jungclaus, K. KeyesV. Kumar, 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

Research output: Contribution to journalArticlepeer-review

Abstract

The neutron-rich nuclei 34,35,36,37,38P were populated in binary grazing reactions initiated by a beam of 36S ions at 215 MeV incident on a thin 208Pb target. The combination of the PRISMA magnetic spectrometer and the CLARA array of escape-suppressed Ge detectors was used to detect γ rays in coincidence with projectile-like nuclear species. Further evidence to support the observed γ decay of excited states of the populated phosphorus isotopes is provided by γ−γ
coincidence measurements based on the results of an earlier thick-target deep-inelastic experiment. Level schemes for 34,35,36,37,38P are presented and discussed within the context of state-of-the-art shell-model calculations. In particular, new spin and parity assignments are proposed for a number of excited states of 36P. The evolution with neutron number of the energy difference of the low-lying Jπ=3/2+ and
1/2+ states in the odd-A isotopes of phosphorus, as well as the relationship to nuclear collectivity, is discussed. The evolution with neutron number of the shell-model wave functions of the first
Jπ=1/2+, 3/2+, and 5/2+states of the odd-A phosphorus isotopes and of the first Jπ=3−, 4−, and 5−states of the even-A isotopes is also explored.
Original languageEnglish
Article number044308
Number of pages1
JournalPhys. Rev. C
Volume92
Issue number4
DOIs
Publication statusPublished - 9 Oct 2015

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