偶偶Cd同位素核的形变HF态及负宇称带研究  

Studies on the HF States and the Negative-Parity Spectra of Even Even Cd Nuclei

作　　者：徐延冰[1] 廖继志[1] 

机构地区：[1]四川大学物理系,成都610064

出　　处：《高能物理与核物理》2003年第2期142-146,共5页High Energy Physics and Nuclear Physics

摘　　要：将具有正宇称的轨道空间扩大到包含具有负宇称的 1h11 2 轨道 ,采用修正的表面δ相互作用(MSDI) ,对10 4 Cd ,10 6Cd ,10 8Cd ,110 Cd ,112 Cd ,114 Cd和116Cd等 7个偶偶核作了形变HF计算 .得到了基态和一些激发态的解 .同时 ,还用近似角动量投影形变Hartree Fock(PDHF)方法对10 8Cd和110 Cd进行了能谱计算 ,得到其正、负宇称带的解 ,计算结果与实验谱基本一致 .Using modified surface delta interaction,enlarging the gds configuration space to include the 1h 11/2 states with the negative-parity,the deformed Hartree-Fock calculations for the seven nuclei ( 104Cd, 106Cd, 108Cd, 110Cd, 112Cd, 114Cd and 116Cd) are performed. The ground-state and some particle-hole excited configurations are obtained. The calculated results show that there exist form transition and shape coexistence from mass number 104 to 116,and that the single-particle energy spectra are different not only for different mass number but also for different configurations of nuclei. At the same time,the approximate angular momentum projected Hartree-Fock(PDHF) method is applied to nuclei 108Cd and 110Cd. And both of their positive- and negative-parity bands are obtained. The results of calculated energy spectra are consistent with experimental spectra well.

关 键 词：Cd同位素核 形变HF态 角动量投影 单粒子能谱 负宇称带 偶偶核 铜同位素核 核结构 

分 类 号：O572.21[理学—粒子物理与原子核物理]