^(209)Pb激发态的相对论平均场理论研究

Research on the excited states in ^(209)Pb with relativistic mean field theory

在球形相对论平均场模型下,采用PK1,相互作用,对209Pb基态及激发态进行计算.从核子的半径、价核子的激发能以及中子、质子和最后一个中子的密度分布,得出结论:209Pb在激发态2g7/2可能存在一个中子皮结构,而在激发态3d5/2、4 s1/2和3d3/2可能存在一个中子晕结构.

Properties of the ground state and the excited states in ^209pb were investigated with relativistic mean field theory with the interactions PK1, NL3,TM1. By analyzing the rms of proton and neutron, the single particle energies of valence nucleon and the density distributions of neutron, proton and the last neutron, it can be found that there exists a neutron skin in the excited state of 2g7/2 and a neutron halo in the excited states of 3d5/2 ,4s1/2 and 3d3/2.