新核素^(265)Bh及其α衰变链上核的基态性质  

Ground State Properties of the Newly Discovered Nucleus ^(265)Bh and It's Alpha Decay Chain

作　　者：张鸿飞[1] 左维[1] 李君清[1] 任秀宰[1] 马中玉[2] 陈宝秋[2] 

机构地区：[1]中国科学院近代物理研究所 [2]兰州重离子加速器国家实验室原子核理论中心

出　　处：《高能物理与核物理》2005年第9期886-891,共6页High Energy Physics and Nuclear Physics

基　　金：国家自然科学基金(10175082;10235020;10235030;10275094;10075080)国家重点基础研究发展规划项(G2000077407;G2000077400)中国科学院知识创新工程重点方向项(KJCX2-SW-N02)中国科学院百人计划和科技部重大前期研究专项基金(2001CCB01200;2002CCB01200)资助~~

摘　　要：运用变形的相对论平均场理论系统地探讨了新核素265Bh及其α衰变链的基态性质.对关联的处理采用了BCS方法,不成对核子的处理运用了“阻塞”法后,所计算的结合能和四极形变符合了有限力程小液滴模型的结果,计算表明研究的α衰变链具有中等大小的长椭球形变;且计算的α衰变能Qα成功地与实验符合.在此基础上进一步研究了新核素265Bh的单粒子能级.The properties of the nuclei belonging to the newly discovered alpha-decay chain starting from ^265Bh have been studied. The axially deformed relativistic mean field （RMF） calculation with the force TMA and NL-Z2 has been performed in the blocked BCS approximation. Some ground state properties such as the binding energies, deformations, spins and parities, as well as Q-values of the alpha decay for this decay chain have been calculated and compared with known experimental data. Good agreement is observed. The single-particle spectrum of the nucleus ^265Bh has been studied.

关 键 词：相对论平均场 超重核 四极形变 Α衰变能 Α衰变链 基态性质 新核素 上核 计算表 理论系统 

分 类 号：O571.4[理学—粒子物理与原子核物理]