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 $^{188\ensuremath{-}196}\mathrm{Pb}$ 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 $^{190\ensuremath{-}194}\mathrm{Pb}$. Furthermore, quadrupole deformations are extracted for $^{186\ensuremath{-}196}\mathrm{Pb}$ 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.