相对论和非相对论理论模型研究奇异核的性质  

Investigation of Properties of Exotic Nuclei in Relativistic and Norelativistic Models

作　　者：陈宝秋[1] 马中玉[1] 

机构地区：[1]兰州重离子加速器国家实验室原子核理论中心

出　　处：《原子核物理评论》2001年第1期1-8,共8页Nuclear Physics Review

基　　金：国家重点基金!研究发展规划 (G2 0 0 0 7740 7) ;国家自然科学基金!资助项目 (19835 0 10 ;198470 0 2 ;10 0 75 0 80 )&&

摘　　要：采用相对论和非相对论理论模型可描述奇异核的性质 .相对论平均场理论预言了 2 6,2 7,2 8P存在一个质子晕 ,而 2 7,2 8,2 9S存在两个质子晕 .最近 ,MSU的最新的实验发现了 2 6,2 7,2 8P核存在一个质子晕 .采用相对论 Hartree- Fock理论研究了 Fock项和矢量介子对奇异核性质的贡献 ,研究表明交换项和矢量介子对非常丰中子核性质的影响非常不同于对稳定线附近核性质的影响 .同时 ,采用形变的 Hartree- Fock- Bogoliubov理论研究了某些轻核同位素链的性质和形变 .Properties of exotic nuclei were described by relativistic and norelativistic models. The relativistic mean field theory predicts one proton halo in 26, 27, 28 P and two proton halos in 27, 28, 29 S. One proton halo in 26, 27, 28 P has been found recently in MSU lab. The relativistic Hartree Fock theory was used to investigate contribution of Fock term and isovector mesons to the properties of exotuc nuclei. It turned out that the influence of the Fock term and isovector mesons on the properties of neutron very rich nuclei was very different from that of near stable nuclei. Meanwhile, deformed Hartree Fock Bogoliubov theory were employed to describe the propeties and deformation of some light nuclei isotopes.

关 键 词：奇异核 相对论平均场理论 相对论Hartree-Fock理论 形变Hartree-Fock-Bogoliubov理论 质子晕 交换项 矢量介子 性质 原子核性质 

分 类 号：O571.2[理学—粒子物理与原子核物理] O412.1[理学—物理]