Intruder bands and configuration mixing in the lead isotopes
arXiv:nucl-th/0301029 · doi:10.1103/PhysRevC.67.024306
Abstract
A three-configuration mixing calculation is performed in the context of the interacting boson model with the aim to describe recently observed collective bands built on low-lying $0^+$ states in neutron-deficient lead isotopes. The configurations that are included correspond to the regular, spherical states as well as two-particle two-hole and four-particle four-hole excitations across the Z=82 shell gap.
20 pages, 4 figures, accepted by PRC, reference added for section 1 in this revised version