Abstract
The core polarization effects for the electric quadrupole moments of the neutron-rich , , and isotopes in the vicinity of the island of inversion are investigated by means of the microscopic particle-vibration coupling model in which the Skyrme Hartee-Fock-Bogoliubov and quasiparticle random-phase approximations are used to calculate the single-quasiparticle wave functions and the excitation modes. It is found that the polarization charge for the proton hole state in is quite sensitive to coupling to the neutrons in the -shell associated with the pairing correlations and that the polarization charge in becomes larger due to the stronger collectivity of the low-lying quadrupole vibrational mode in the neighboring nucleus.
- Received 18 February 2009
DOI:https://doi.org/10.1103/PhysRevC.79.054303
©2009 American Physical Society