State in 18 O by using Core – Polarization effects

Abstract

Coulomb form factors for E0 transition in  18O are discussed taking into account core-polarization effects. These effects are taken into
account through the collective model of Tassie and also through a microscopic perturbation theory including excitations up to 2p1f shell.
Space wave model functions defined for the orbits 1 and  2125O nucleus has been the
subject of extensive theoretical and experimental studies, which received
much attention in last decade [Alex Brown et.al.2005]. The 18O system
contains two neutrons in addition to the16O core distributed in the sd – shell.
d1  are obtained from the diagonalization of the interaction Hamilonian of Wildenthal. The calculations include the 0
2state with excitation energies3.6337MeV. The core – polarization effects which incorporate the ollective model of Tassei describe the data very well for this state.