Configuration mixing in the neutron-deficient 186-196Pb isotopes

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 ^188-196Pb are discussed and some care is suggested concerning the current classification on the basis of level systematics of the 4₁+ and 6₁+ states in ^190-194Pb. Furthermore, quadrupole deformations are extracted for ^186-196Pb 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.