Shape coexistence in the lead isotopes using algebraic models: Description of spectroscopic and ground-state related properties

R. Fossion, V. Hellemans, S. De Baerdemacker, K. Heyde
Acta Physica Polonica B
36 (4), 1351-1354
Published while none of the authors were employed at the CMM


A three-configuration mixing calculation is presented in the context of the Interacting Boson Model (IBM1), with the aim to describe recently observed collective bands built on low-lying 0(+) states in the neutron-deficient lead isotopes. Possible effects on the nuclear binding energy are addressed, caused by mixing of these low-lying 0(+) intruder states into the ground state, and a new method is described in order to provide a consistent description of both ground-state and excited-state properties.