新核素^(278)113的基态特性及其α衰变链的研究  

Description of New Element Z=113 and Its α-Decay Chain

作　　者：邰非[1] 陈鼎汉[1] 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》2005年第5期439-441,共3页High Energy Physics and Nuclear Physics

基　　金：国家杰出青年基金(10125521);教育部博士点基金(20010284036);国家重点基础研究发展规划项(G2000077400);中国科学院创新工程重点项目(KJCX2 SW No2)资助1)~~

摘　　要：用形变的相对论平均场模型,Skyrme Hartree Fock 模型及宏观-微观模型研究了新核素278113及其α衰变链的α衰变能和半衰期.计算的α衰变能同实验数据比较符合,相应的半衰期也在合理的范围内.计算进一步表明形变对超重核的基态性质有重要影响.RIKEN has produced a new element Z = 113 by cold-fusion reaction. Here we systematically study the new nuclide 278113 and its α-Decay chain using deformed relativistic mean-field theory with three sets of force parameters, TMA, NL-Z2 and NL3. The results are compared with those of the Skyrme-Hartree-Fock model, Moller et al and also with the new experimental data. The experimental decay energies are well reproduced with RMF. This not only shows the validity of self-consistent field theoretical model in researching the ground state properties of superheavy nuclei, but also shows that prolate deformation is important for the ground state of these nuclei.

关 键 词：相对论平均场模型 半衰期 a衰变能 宏观-微观模型 超重核物理学 

分 类 号：O571[理学—粒子物理与原子核物理]