1h_(11/2)轨道对A～100区偶偶核形状影响的系统研究

Influence of 1h_(11/2) Orbit on the Shapes of Even Even Nuclei Around A～100 Region

采用修正的表面δ相互作用 (MSDI) ,对10 2— 114 Ru ,10 2— 116Pd和10 4— 116Cd等 2 2个偶偶核分别在gds和gdsh两种不同的组态空间中作了形变HF计算 .得到了长、扁椭球等基态或激发态的解 .结果表明在质量数为 10 2— 116间的原子核存在形状过渡和形状共存现象 ,且单粒子能级随质量数及组态的不同而不同 .两种不同组态空间中的计算结果的对比表明 ,形变HF计算中 1h11 2 轨道的介入及填充与否对A～ 10

Using modified surface delta interaction, the deformed Hartree-Fock calculations for twenty two nuclei such as 102—114Ru, 102—116Pd, 104—116Cd etc. are performed in the gds and gdsh configuration space, respectively. Prolate and oblate configurations are obtained. It is shown that there exist shape transitions for the nuclei with the mass number from 102 to 116, the resultant single-particle energy spectrum is changed not only with the mass number but also with the configuration, and the results, by considering the 1h 11/2 orbit, are quite different from those obtained in the gds configuration space. Moreover, the number of protons in the nucleus and filling up the 1h 11/2 orbit, especially with neutrons, play important roles in the single-particle energy spectrum and the shape transition.