摘要

To expand the multi-quasiparticle (qp) configuration space of the projected shell model, the Pfaffian algorithm is applied to facilitate calculations of the matrix elements. With inclusion of 6-qp states in the projected basis, the yrast band of Hf-166 at very high spins is studied, where the observed three anomalies in moment of inertia are well reproduced and explained by the contributions of the 2-qp, 4-qp, and 6-qp states, respectively.