A=100区奇奇核旋称反转及三轴形变对它的影响  

Signature Inversion in Odd-odd Nuclei in the Mass Region A 100 and the Influence of the Triaxial Shape

作　　者：罗向东[1] 郑仁蓉[1] 朱顺泉[1] 

机构地区：[1]上海师范大学数理信息学院,上海200234

出　　处：《上海师范大学学报（自然科学版）》2003年第3期33-37,共5页Journal of Shanghai Normal University(Natural Sciences)

基　　金：上海市高校科技发展基金(03D01);上海市科技发展基金(0252nm082)

摘　　要：将两准粒子加轴对称转子模型扩展到对A=100质量区两个奇奇核^(102)Rh和^(98)Rh的旋称反转的研究后,又在此基础上引入原子核的三轴形变。计算结果表明,可能的旋称反转机制(即:低K空间n-p相互作用和科氏力的相互竞争),对于A=100质量区奇奇核也是适用的。在引入了三轴形变后与轴对称情形下相比较,明显地改进了能谱的振荡特性。The model of an axially symmetric rotor plus two quasi-particles for the Signature Inversion (SI) in odd-odd nuclei is generalized to the calculation of two odd-odd nuclei l02Rh and 98Rh in the mass region A =100. The triaxial deformation is then introduced. The calculation result shows that the possible SI mechanism (i. e. , the competition between the n - p interaction and the coriolis force in low K space) is also appropriate for odd-odd nuclei in the A = 100 region. A triaxial shape can improve the vibrational property of the rotational spectra remarkably.

关 键 词：奇奇核 旋称反转 两准粒子加轴对称转子模型 

分 类 号：O571.2[理学—粒子物理与原子核物理]