关键词: 
转动特征 /
总Routhian 面计算 /
转动惯量 /
带交叉

摘要: 通过总Routhian 面计算方法研究了Z = 102 号元素已实验合成的偶偶^248-264No同位素的转动性质。计算的基态形变β2,β4 与前人的计算相符。^252,245No 两核基态带的转动惯量特征能得到基本再现。偶偶^248-264No同位素转动惯量系统上弯的现象可归因于带交叉。研究还表明，推转时质子与中子顺排有强烈竞争，在较轻的No同位素中j_15/2 中子拆对顺排较为优先，而在较重的No 核中i_13/2 质子顺排更加优先。The rotational properties of the synthesized even-even ^248-264No isotopes have been investigated by means of total Routhian surface calculations. The calculated ground-state properties (e.g. β2; β4) are in agreement with previous calculations. The behaviors of moment of inertia of ^252,254No are well reproduced by our calculations. The systematic upbending in moment of inertia is attributed to band crossing. It is found that the j_15/2 neutron rotation-alignment is preferred for the lighter No isotopes, but the i_13/2 proton alignment is favored in the heavier ones.