采用基于推转壳模型的粒子数守恒方法对105Cd和106Cd中的反磁转动带进行了研究,在计算当中,粒子数严格守恒,并且堵塞效应也是严格考虑的.计算结果很好地再现了实验上观测到的Ⅰ-Ω关系、转动惯量以及约化跃迁几率B(E2).通过检验双剪角,即两个质子空穴角动量的合拢,对反磁转动中的双剪刀机制进行了分析.研究表明剪刀角的合拢非常敏感地依赖于对关联.
The antimagnetic rotation bands in 105,106Cd are investigated by the cranked shell model with pairing correlations treated by a particle-number conserving method,in which the blocking effects are taken into account exactly.The experimental moments of inertia,Ⅰ-Ω relation and the reduced B(E2) transition probabilities are well reproduced.The two-shears-like mechanism for the antimagnetic rotation is investigated by examining the shears angle,i.e.,the closing of the two proton hole angular momenta.The sensitive dependence of the shears angle on the nuclear pairing correlations is revealed.
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