超形变带自旋的比较指定  

Comparative Assignments of Spin of Superdeformed Bands

作　　者：李明亮[1] 朱胜江[1] 徐辅新[2] 

机构地区：[1]清华大学物理系,北京100084 [2]安徽大学物理系,合肥230039

出　　处：《高能物理与核物理》2005年第10期954-959,共6页High Energy Physics and Nuclear Physics

基　　金：国家重点基础研究发展规划项目(G2000077405)国家自然科学基金(10375032)教育部博士点基金(20030003090)资助~~

摘　　要：首次用Bohr-Mottelson公式和Harris公式同时指定A≈190区超形变带的带首自旋值.对大多数超形变带,用以上两种方法指定的自旋是一致的,而对部分超形变带则不一致.不能一致地指定自旋的和自旋指定不符合带首转动惯量系统学的超形变带,用带首转动惯量系统学或两类转动惯量系统学的方法重新指定其自旋.利用指定的自旋,拟合Bohr-Mottelson转动谱公式,研究了参数之间的关系,结果表明从Harris三参数公式导出的关系式更符合实验值.The spin values of the superdeformed （SD） bands in A ≈ 190 region have been assigned by comparing the fitting results of Bohr-Mottelson and Harris formulas. The assigned spin values in most of the SD bands are consistent in the both fitting results. For the superdeformed bands whose spin cannot be assigned consistently by the two formulas or the bands whose spin assignment doesn＇t accord with bandhead moments of inertial systematics~ we assign their spin using moments of inertial systematics. By using our assigned spin values, the relation of parameters of Bohr-Mottelson formula has been examined. The results show that the relation deduced from three-parameter Harris formula is closer to the experiment than the relation deduced from ab formula.

关 键 词：超形变带 自旋指定 转动惯量 转动谱公式 自旋值 带首转动惯量系统学 Harris公式 转动谱 实验值 关系式 

分 类 号：O571.2[理学—粒子物理与原子核物理]