Unveiling the origin of shape coexistence in lead isotopes

Details Unveiling the origin of shape coexistence in lead isotopes Unveiling the origin of shape coexistence in lead isotopes

2003-11-28

arxiv.org/abs/nucl-th/0311105v1

Phys.Rev.Lett. 93 (2004) 082502

Physics

Nuclear Physics

Nuclear Theory

5 pages, 6 postscript figures

Scientific paper

10.1103/PhysRevLett.93.082502

The shape coexistence in the nuclei $^{182-192}$Pb is analyzed within the Hartree-Fock-Bogoliubov approach with the effective Gogny force. A good agreement with the experimental energies is found for the coexisting spherical, oblate and prolate states. Contrary to the established interpretation, it is found that the low-lying prolate and oblate $0^+$ states observed in this mass region are predominantly characterized by neutron correlations whereas the protons behave as spectators rather than playing an active role.

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