Configuration mixing in the neutron-deficient ${}^{186-196}$Pb isotopes

Abstract

In this article we report the results of detailed interacting boson model calculations with configuration mixing for the neutron-deficient Pb isotopes. Calculated energy levels and $B(E2)$ values for ${}^{188-196}$Pb are discussed and some care is suggested concerning the current classification on the basis of level systematics of the $4_1^{+}$ and $6_1^{+}$ states in ${}^{190-194}$Pb. Furthermore, quadrupole deformations are extracted for ${}^{186-196}$Pb and the mixing between the different families (0p-0h, 2p-2h, and 4p-4h) is discussed in detail. Finally, the experimental and the theoretical level systematics are compared.

to be published in Phys. Rev. C