质子-中子相互作用玻色子模型的计算程序NPBOS的群链检验  

GROUP CHAIN CHECK ON THE PROTON-NEUTRON INTERACTING BOSON MODEL COMPUTER CODE NPBOS

作　　者：龙桂鲁[1] 孙洪洲[1] 

机构地区：[1]清华大学现代应用物理系

出　　处：《高能物理与核物理》1989年第9期849-855,共7页High Energy Physics and Nuclear Physics

基　　金：中国青年基金

摘　　要：应用质子玻色子和中子玻色子耦合的观点讨论了质子-中子相互作用玻色子模型(IBM2)的各种对称群链.IBM2的动力学对称群链分四类,其中某些对称群链是新发现的.应用群链检验方法,对广泛使用的IBM2计算程序NPBOS进行了检验,结果表明,除O(6)极限外,NPBOS程序的结果是正确的.我们改正了NPBOS中的错误,并利用改正后的NPBOS计算了^(150)Sm,^(150)Sm核的能谱和E2跃迁,得到了与实验符合较好的结果.In view of the proton boson and neutron boson coupling, all possible dynamical symmetries in the proton-neutron interacting boson model are discussed. The symmetries are found to be in four types, of which some are newly discovered. The commonly used IBM2 computer code NPBOS is checked through group chain method. It is found that most NPBOS calculations are correct, except in cases where Q_x·Q_π and Q_(?)·Q_ν is included in the Hamiltonian. Using NPBOS, ^(150)Sm and ^(152)Sm are studied.

关 键 词：质子 中子 计算程序 玻色子 群链 

分 类 号：O572.24[理学—粒子物理与原子核物理]