68Ni和132Sn矮共振约束对称能密度依赖行为(英文)

作     者：曹李刚 Andrea Carbone Gianluca Colo 

作者机构：Dipartimento di FisicaUniversit`a degliStudi di Milano INFNSezione di Milano 

出 版 物：《IMP & HIRFL Annual Report》 (中国科学院近代物理研究所和兰州重离子研究装置年报(英文版))

年 卷 期：2010年

页      面：23-25页

学科分类：08[工学] 0827[工学-核科学与技术] 

摘      要：The energy per particle in a nuclear system characterized by a total density ρ(sum of the neutron and proton densities ρn and ρp),and by a local asymmetry δ≡(ρn-ρp)/ρ,is usually written asEA(ρ,δ)=E/A(ρ,δ=0)+ S(ρ)δ2.(1)Odd powers of δ are forbidden by the isospin symmetry and the term proportional to δ4 is found to be negligible.The above equation defines the so-called symmetry energy S(ρ).Determining the values of the symmetry energy at various densities