偶偶No同位素转动性质研究(英文)
Investigation of Rotational Properties in Even-Even Nobelium Isotopes
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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j15/2 中子拆对顺排较为优先，而在较重的No 核中i13/2 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 j15/2 neutron rotation-alignment is preferred for the lighter No isotopes, but the i13/2 proton alignment is favored in the heavier ones.Abstract: 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 j15/2 neutron rotation-alignment is preferred for the lighter No isotopes, but the i13/2 proton alignment is favored in the heavier ones.
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