Self-consistent approach to deformation of intruder states in neutron-deficient Pb and Po

Abstract

We present systematic calculations of the properties of 11- isomers in neutron-deficient 184-198Pb and 188-200Po. These states are based on the proton (h9/2 i13/2)_{K = 11-} configuration. They are calculated in the framework of the Hartree-Fock-Bogoliubov method with a Skyrme interaction and density-dependent pairing force. The energies and deformations of the 11- states are compared to those of the intruder 0+ states in both Pb and Po isotopes. In the most neutron-deficient Po isotopes, the calculations predict, below a weakly oblate 11- state, another oblate 11- state which is even more deformed than the intruder oblate 11- state in their Pb isotones. The energies and quadrupole moments of the 11- isomers, corresponding to a weakly oblate nuclear shape, are in fair agreement with the available experimental data.

arXiv comment8 pages, 5 figures, revtex; Phys. Lett. B (in press)

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• The Pt isotopes: comparing the Interacting Boson Model with Configuration Mixing and the Extended Consistent-Q formalism
• The platinum nuclei: concealed configuration mixing and shape coexistence
• Nuclear shape coexistence in Po isotopes: An interacting boson model study
• beta-decay in neutron-deficient Hg, Pb, and Po isotopes
• Configuration mixing in ${}^{188}$Pb : band structure and electromagnetic properties
• Nuclear shape dependence of Gamow-Teller distributions in neutron-deficient Pb isotopes
• Large-scale shell-model calculations on the spectroscopy of $N<126$ Pb isotopes
• Shapes of the ${}^{192,190}$Pb ground states from beta decay studies using the total absorption technique
• Re examination of \b{eta} decay in Hg, Pb and Po Isotopes