用处理对力的粒子数守恒方法分析了锕系变形核转动惯量及其奇偶差随角频率ω变化的微观机制 .建立在高j闯入轨道上的奇A核转动带 ,如 2 3 5U(ν[74 3]7 2 )带的转动惯量 ,比相邻偶偶核基态带大得多 ,而且 ,随ω变化的规律也呈现明显的奇偶差 .这些规律在粒子数守恒计算中得到很好地重现 .计算中无自由参数 ,单极和四极有效对力强度由结合能和带首转动惯量奇偶差实验值确定 The microscopic mechanism of the moment of inertia of actinide nuclei and the variation of its odd and even difference with the angular frequency ω is analyzed by the method of conservation of the particle number of force.It is found that the odd A nuclear rotation band on the intruding orbit of high j is 2 35 U ν [74 3] 7 2) The moment of inertia of the band is much larger than the ground state band of the adjacent even-numbered nuclei, and the regularity with the variation of ω also shows obvious odd-even difference. These laws are well calculated in the conservation of particle number No free parameters in the calculation, the unipolar and quadrupole effective pairs of force by the binding energy and the first with the first moment of inertia determined by the experimental value of parity