Author/Authors :
E. Khan ، نويسنده , , Y. Blumenfeld، نويسنده , , Nguyen Van Giai ، نويسنده , , T. Suomijarvi، نويسنده , , N. Alamanos and J.L. Sida، نويسنده , , F. Auger ، نويسنده , , G. Colo، نويسنده , , N. Frascaria، نويسنده , , A. Gillibert، نويسنده , , T. Glasmacher، نويسنده , , M. Godwin، نويسنده , , K.W. Kemper، نويسنده , , V. Lapoux، نويسنده , , I. Lhenry-Yvon، نويسنده , , F. Marechal، نويسنده , , D.J. Morrissey، نويسنده , , A. Musumarra، نويسنده , , N.A. Orr، نويسنده , , S. Ottini-Hustache، نويسنده , , P. Piattelli، نويسنده , , et al.، نويسنده ,
Abstract :
Proton elastic and inelastic scattering angular distributions to the 2+1 and the 3−1 states for the neutron-rich nucleus 20O were measured with a secondary beam using the MUST silicon strip detector array. Data for 18O were also obtained for comparison. A phenomenological analysis has been used to deduce the deformation parameters βp,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 20O is confirmed and predictions are discussed for the properties of the heavier neutron-rich oxygen isotopes.
