α-结团模型对超重核α衰变寿命的研究  

Study on the α-Decay Lifetimes of Superheavy Elements

作　　者：许昌[1] 任中洲[1] 

机构地区：[1]南京大学物理系,南京210008

出　　处：《高能物理与核物理》2003年第12期1089-1094,共6页High Energy Physics and Nuclear Physics

基　　金：国家杰出青年基金 ( 10 12 5 5 2 1) ;教育部博士点基金 ( 2 0 0 10 2 840 3 6) ;国家重点基础研究发展规划项目 (G2 0 0 0 0 7740 0 ) ;中国科学院创新工程重点项目 (KJCX2 SW N0 2 )资助~~

摘　　要：用α 结团模型计算新合成超重元素的半衰期 ,与已知的实验数据进行对比分析 ,发现理论和实验数据能够很好地符合 ,验证了α 结团模型对超重核研究的有效性 .同时结合标准的形变Har tree Fock模型核质量表给出半衰期理论计算结果 ,可供以后在理论或实验上研究超重核参考 ,在此基础上进一步分析超重核区域的α衰变能、双中子分离能和双质子分离能 ,并讨论Z =114和N =184处是否存在壳效应 .The α-decay lifetimes of the newly synthesized superheavy elements are calculated using the α-cluster model and the results are in good agreement with experimental data. This indicates the reliability of the α-cluster model. The theoretical lifetimes based on the Hartree-Fock nuclear mass table are also calculated, which are useful for further theoretical and experimental researches on superheavy nuclei. We have also analyzed the α-decay energies, the separation energies of the last two neutrons and the separation energies of the last two protons of the superheavy nuclei. The shell effect at Z=114 and N=184 is discussed.

关 键 词：超重元素 α-结团模型 半衰期 衰变能 壳效应 Α衰变 双中子分离能 双质子分离能 

分 类 号：O571.32[理学—粒子物理与原子核物理]