Tb和Dy同位素超形变带的Harris公式分析  

Analysis of superdeformed bands in Tb and Dy isotopes by using Harris formula

作　　者：郭建友[1] 李伟[1] 徐辅新[1] 

机构地区：[1]安徽大学物理系,安徽合肥230039

出　　处：《安徽大学学报（自然科学版）》2001年第4期42-49,共8页Journal of Anhui University(Natural Science Edition)

基　　金：国家自然科学基金资助项目 (19991480 );安徽省教委基金资助项目 (98JL0 14);安徽省高校优秀青年教师资金资助项目 (0 10 16 0 17)

摘　　要：利用Harris公式对 15 0区Tb和Dy同位素 37条超形变带运动学转动惯量的实验提取值进行了拟合 ,发现其中 2 0条超形变带 ,不仅 J(1 ) 的计算值与其实验提取值惊人地符合 ,而且由J(1 ) 拟合所定出的参数算出的动力学转动惯量J(2 ) 也与其实验提取值符合得很好 ,表明这些超形变带 ,用Harris公式指定其能级自旋是合适的 ,特别是1 52 Dy(1)带 ,由Harris公式指定的带首自旋是 2 6 。The superdeformed bands in Tb and Dy isotopes are analyzed by using the kinematic moments of inertia formula J (1) =2α+43βω 2+65γω 4 in order to extract level spin. The results show that the calculated J (1) of 20 superdeformed bands are agreement excellently with that of extracted from expression  2(2I-1)/E γ(I). With the parameters determined by J (1) fitting, the calculated values of dynamic moments of inertia J (2) are also agreement with that of extracted from experiments. All of these show our assignment of the level spins is reliable. In particular, the spin of the lowest level of the first discovered high-spin SD band 152 Dy(1) predicted to be I 0=26 is more proper.

关 键 词：Harris公式 转动惯量 自旋指定 超形变带 能级自旋 同位素 铽 镝 核结构 

分 类 号：O614.34[理学—无机化学] O571.21[理学—化学]