A self-consistent QRPA study of quadrupole collectivity around 32Mg

Details A self-consistent QRPA study of quadrupole collectivity around 32Mg A self-consistent QRPA study of quadrupole collectivity around 32Mg

2003-12-18

arxiv.org/abs/nucl-th/0312084v1

Physics

Nuclear Physics

Nuclear Theory

5 pages, 5 figures, Proceedings of the international symposium "A new era of nuclear structure physics", 19-22 November 2003,

Scientific paper

On the basis of the Hartree-Fock-Bogoliubov (HFB) plus quasiparticle random phase approximation method (QRPA) based on the Green's function approach with Skyrme force, we discuss the anomalous E2 properties of the first 2+ states in neutron-rich nuclei 32Mg and 30Ne. The B(E2) values and the excitation energies of the first 2+ states are well described within HFB plus QRPA calculations with spherical symmetry. We conclude that pairing effects account largely for the anomalously large B(E2) values and the low excitation energies in 32Mg and 30Ne.

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