量子群U_(qp)(u_2)模型对A～190区超形变带研究  

Study for Superdeformed Bands in A～190 Region with Quantum Group U_( qp)(u_2) Model

作　　者：张新明[1] 周焕强[2] 

机构地区：[1]曲靖师范学院信息技术与计算机科学系,云南曲靖655000 [2]重庆大学应用物理系,重庆630044

出　　处：《高能物理与核物理》2002年第8期843-850,共8页High Energy Physics and Nuclear Physics

基　　金：云南省教育厅科研基金资助~~

摘　　要：用双参数量子群Uqp(u2 )理论模型公式对A～ 1 90区 47条超形变 (SD)转动带进行了系统分析 .计算得到的Eγ 跃迁谱与实验较好地吻合 ;按转动带自旋指定的 3种方案确定194 Hg( 1 ) ,194 Pb( 1 )的带首自旋 ,结果与实验一致 .此外 ,进一步讨论了核软度参数σ1的物理意义 。superdeformed bands in the A ～190 region are systematically analyzed by using the twoparameter expansion of quantum group U q*$p (u 2) Model. The calculated results of E2 transition γ ray energies are in agreement with experimental data. According to three different methods for the spin assignment of rotational bands, the spin values of the band head I 0 of the yrast SD bands in 194 Hg(1) and 194 Pb(1) are assigned. Furthermore, the physical meaning of the nuclear softness is discussed, and these nuclear softness values of a signature partner are almost equal.

关 键 词：量子群 超形变带 量子代数 Uqp(u2)模型 原子核 结构 

分 类 号：O571.2[理学—粒子物理与原子核物理] O413[理学—物理]