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核对称能的密度依赖性对于原子核物理和天体物理中的许多问题很重要。基于密度依赖的结团模型,奇特的结团放射性被用来约束核对称能及其斜率的大小。在密度依赖的结团模型中,清楚地给出了结团放射性子核208Pb的中子皮大小与对称能的斜率参数L(ρ_0)之间的关联。发现从M3Y核子-核子相互作用得到的结团-208Pb同位旋矢量势对于对称能的斜率参数L(ρ_0)非常重要。基于结团放射性实验数据和新的208Pb的中子皮大小实验数据,成功得到对称能的斜率参数L(ρ_0)的大小。也讨论了利用质子放射性数据提取的斜率参数L(ρ_0)。
Density-dependent density checking is important for many problems in nuclear physics and astrophysics. Based on the density-dependent clumping model, peculiar clumping radioactivity is used to constrain the symmetry and its slope. In the density-dependent clumping model, the correlation between the neutron skin size of the radiant nuclei 208Pb and the slope parameter L (ρ_0) of symmetry energy is clearly given. It was found that the cluster-208Pb isospin vector obtained from the M3Y nucleon-nucleus interaction is very important for the slope parameter L (ρ_0) of the symmetry energy. Based on the experimental data of clumps of radioactivity and the experimental data of neutron skin size of 208Pb, the size of the slope parameter L (ρ_0) of symmetry energy was successfully obtained. Also discussed is the slope parameter L (ρ_0) extracted using proton radioactivity data.