190区超形变核态转动惯量的奇偶差分析  

Odd-Even Difference of Moment of Inertia of NuclearSuperdeformed States in A～190 Region

作　　者：郭建友[1] 徐辅新[1] 阮图南[2] 

机构地区：[1]安徽大学物理系,合肥230039 [2]中国科技大学近代物理系,合肥230027

出　　处：《高能物理与核物理》2001年第8期754-758,共5页High Energy Physics and Nuclear Physics

基　　金：国家自然科学基金 ( 1 96771 0 2 ;1 97750 4 4;1 9991 4 80 ) ;北京正负电子对撞机国家实验室基金 ;兰州重离子加速器国家实验室

摘　　要：用Bohr Mottelson的I(I+1 )展开三参数公式拟合能谱所定出的展开系数 ,计算 1 90区超形变带的带首转动惯量 .计算结果显示 :奇A核的带首转动惯量系统大于相邻偶偶核的带首转动惯量 ,奇奇核的带首转动惯量系统大于相邻奇A核的带首转动惯量 ,超形变核态带首转动惯量展现出明显的奇偶差现象 .By fitting the E2 transition spectra of superdeformed bands in A～190 region, the coefficients of Bohr-Mottelson's I(I+1) expansion are determined and moments of inertia of band head are calculated out. All results show that the moments of inertia of odd-A nuclei are systematically larger than those of the neighboring even-even nuclei, and the moments of inertia of odd-odd nuclei are systematically larger than those of the neighboring odd-A nuclei. The odd-even difference of moment of inertia of nuclear superdeformed states is obvious.

关 键 词：超形变核态 转动惯量 奇偶差 

分 类 号：O571[理学—粒子物理与原子核物理]