Constraints on neutron skin thickness and symmetry energy of 208Pb through Skyrme forces and cluster model  

作　　者：M.Moghaddari Amiri O.N.Ghodsi 

机构地区：[1]Department of Physics,Faculty of Science,University of Mazandaran,P.O.Box 47415-416,Babolsar,Iran

出　　处：《Chinese Physics C》2020年第5期92-99,共8页中国物理C（英文版）

摘　　要：We used the cluster structure properties of the 212Po to estimate the neutron skin thickness of 208Pb.For this purpose,we considered two important components:(a)alpha decay is a low energy phenomenon;therefore,one can expect that the mean-field,which can explain the ground state properties of 212Po,does not change during the alpha decay process.(b)212Po has a high alpha cluster-like structure,two protons and two neutrons outside its core nucleus with a double magic closed-shell,and the cluster model is a powerful formalism for the estimation of alpha decay preformation factor of such nuclei.The slope of the symmetry energy of 208Pb is estimated to be 75±25 MeV within the selected same mean-fields and Skyrme forces,which can simultaneously satisfy the ground-state properties of parent and daughter nuclei,as their neutron skin thicknesses are consistent with experimental data.

关 键 词：Α-DECAY ISOSPIN asymmetry neutron-skin thickness HARTREE-FOCK FORMALISM 

分 类 号：O571.321[理学—粒子物理与原子核物理]