Proton elastic and inelastic scattering angular distributions to the 2(1)(+) and the 3(1)(-) states for the neutron-rich nucleus O-20 were measured with a secondary beam using the MUST silicon strip detector array. Data for O-18 were also obtained for comparison. A phenomenological analysis has been used to deduce the deformation parameters beta(p,p), for the collective excitations, Matter and transition densities were generated from self-consistent QRPA calculations. DWBA calculations using microscopic optical potentials obtained with these densities and the JLM interaction are compared to the data. The isovector character of the 2(1)(+) state in O-20 is confirmed and predictions are discussed for the properties of the heavier neutron-rich oxygen isotopes. (C) 2000 Elsevier Science B.V. All rights reserved.
|Titolo:||Low-lying collective states in neutron-rich oxygen isotopes via proton scattering|
|Data di pubblicazione:||2000|
|Citazione:||Low-lying collective states in neutron-rich oxygen isotopes via proton scattering / Khan E; Blumenfeld Y; Van Giai N; Suomijarvi T; Alamanos N; Auger F; Colo G; Frascaria N; Gillibert A; Glasmacher T; Godwin M; Kemper KW; Lapoux V; Lhenry I; Marechal F; Morrissey DJ; Musumarra A; Orr NA; Ottini-Hustache S; Piattelli P; Pollacco EC; Roussel-Chomaz P; Roynette JC; Santonocito D; Sauvestre JE; Scarpaci JA; Volpe C. - In: PHYSICS LETTERS. SECTION B. - ISSN 0370-2693. - 490:1-2(2000), pp. 45-52.|
|Appare nelle tipologie:||1.1 Articolo in rivista|