Elsevier

Nuclear Physics A

Volume 616, Issues 1–2, 14 April 1997, Pages 406-417
Nuclear Physics A

Mean-field and shell-model approaches to deformation of unstable nuclei

https://doi.org/10.1016/S0375-9474(97)00110-3Get rights and content

Abstract

The structure of unstable nuclei is discussed. First, the experimentally studied neutron skin of Na and Mg isotopes is compared to the Hartree-Fock calculations. The standard Skyrme Hartree-Fock calculation is shown to produce reasonable predictions as well as the relativistic mean field approaches. The deformation of 32Mg is revisited by comparing calculated results to the observed B(E2) value. It is suggested that this nucleus shows γ-unstable deformation to a certain extent, as a consequence of the N=20 closed shell breaking. We point out that the deformation is also an important aspect in reactions involving unstable nuclei. Finally, we present basic points and a recent result of the Quantum Monte Carlo Diagonalization method. The application is made for a large-scale shell model calculation for a proton-rich N=Z unstable nucleus 64Ge, suggesting its γ-unstable deformation.

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