| Literature DB >> 17678217 |
B Bastin1, S Grévy, D Sohler, O Sorlin, Zs Dombrádi, N L Achouri, J C Angélique, F Azaiez, D Baiborodin, R Borcea, C Bourgeois, A Buta, A Bürger, R Chapman, J C Dalouzy, Z Dlouhy, A Drouard, Z Elekes, S Franchoo, S Iacob, B Laurent, M Lazar, X Liang, E Liénard, J Mrazek, L Nalpas, F Negoita, N A Orr, Y Penionzhkevich, Zs Podolyák, F Pougheon, P Roussel-Chomaz, M G Saint-Laurent, M Stanoiu, I Stefan, F Nowacki, A Poves.
Abstract
The energies of the excited states in very neutron-rich (42)Si and (41,43)P have been measured using in-beam gamma-ray spectroscopy from the fragmentation of secondary beams of (42,44)S at 39A MeV. The low 2(+) energy of (42)Si, 770(19) keV, together with the level schemes of (41,43)P, provides evidence for the disappearance of the Z=14 and N=28 spherical shell closures, which is ascribed mainly to the action of proton-neutron tensor forces. New shell model calculations indicate that (42)Si is best described as a well-deformed oblate rotor.Entities:
Year: 2007 PMID： 17678217 DOI： 10.1103/PhysRevLett.99.022503
Source DB: PubMed Journal: Phys Rev Lett ISSN： 0031-9007 Impact factor: 9.161