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利用粒子一转子模型研究了奇Ａ Ｌｕ核负宇称Ｙｒａｓｔ态带交叉前后的能谱和跃迁几率，理论值和实验值符合得较好．研究表明，~(１６１，１６３，１６５，１６７)Ｌｕ负宇称Ｙｒａｓｔ态是三轴形变的；ａｂ公式正确地描述了带交前后核心的转动惯量随角动量Ｉ的变化．
The particle-rotor model is used to study the energy spectra and the transition probability before and after crossing the odd-negative A Lu nuclear parity-parity Yrast band. The theoretical and experimental data agree well with the experimental data. The results show that the negative-parity Yrast states of ~ (161,163,165,167) are triaxial deformations, and the ab formula correctly describes the changes of moment of inertia with the angular momentum I before and after the banding.