【作者】 班淑芳； 孟杰； Ramon．A．Wyss；

【Author】 BAN Shu-Fang MENG Jie Ramon. A. Wyss (School of Physics, Peking University, Beijing 100871, China) (Royal Institute of Technology, AlbaNova University Center, 10691 Stockholm, Sweden) (Center of Theoretical Nuclear Physics, National Laboratory of Heavy Ion Accelerator of Lanzhou, Lanzhou 730000, China) (Institute of Theoretical Physics, Chinese Academy of Sciences, Beijing 100080, China)

【机构】 北京大学物理学院； 瑞典皇家工学院；

【摘要】 最新研究发现原子核对称能与平均的能级密度和同位旋矢量势直接相关．在相对论平均场理论中,势场可以分为同位旋矢量和同位旋标量两部分．采用PK1,NL3,NLSH和TM1相互作用参数, 对于A=48同质量数链,分别了计算势场中包含或不含同位旋矢量项时的原子核结合能,研究了原子核的对称能,即平均能级间距ε和同位旋矢量势的有效强度κ．更多还原

【Abstract】 Recently it was found that the nuclear symmetry energy can be directly associated with the mean level density and an iso-vector potential. In this paper, the nuclear symmetry energy is studied within the relativistic mean field (RMF) theory. The potential of the RMF theory can be separated into an isovector and isoscalar components. The nuclear binding energies in A = 48 isobaric chain calculated from RMF theory with or without the isovector terms for effective interactions PK1, NLSH, NL3, and TM1 have been used to analyze the nuclear symmetry energy in detail, i.e., mean level spacing ε and the effective isovector potential strength κ.更多还原