Microscopic mechanism of identical superdeformed bands in ^192,193,194Hg

The microscopic mechanism of identical superdeformed bands in ^192,193,194Hg is investigated using the particle-number conserving treatment for the cranked shell model with monopole and quadrupole pairing interactions. In combination with the analysis for normally deformed identical bands in the rare-earth nuclei, it is shown that the identical bands observed in normally deformed rare-earth nuclei and superdeformed nuclei in the A∼190 region result from the competition among shell effect, pairing interaction, blocking effect on pairing, and Coriolis antipairing interaction, where a strict and consistent treatment of blocking effect plays a crucial role.