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Unveiling the origin of shape coexistence in lead isotopes

J. L. Egido·L. M. Robledo·R. R. Rodriguez-Guzman
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Abstract

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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J. L. Egido, L. M. Robledo, R. R. Rodriguez-Guzman. 2003-11-28. Unveiling the origin of shape coexistence in lead isotopes. https://doi.org/10.1103/physrevlett.93.082502

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