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在密度依赖的结团模型下重新研究了铅以上原子核的结团放射性。根据由核电荷半径以及中子皮厚度的实验数据所提炼的子核和结团密度分布,通过双折叠模型得到了关键的结团-核芯作用势。然后结合库仑波函数边界条件求解了结团-子核相对运动的薛定谔方程,以得到衰变宽度。和我们以往没有考虑子核和结团密度具体分布的计算结果相比,现在得到的结团放射性衰变宽度明显增大。另外,随着结团中心越来越高的密度压低,衰变宽度的计算值会减小。
In the density-dependent clumping model re-study of the lead above the nuclei of clumps radioactivity. Based on the nuclear and clump density distributions derived from the experimental data of the nucleus charge radius and the neutron skin thickness, a key cluster-core potential is obtained by the bifold model. Then, the Schrödinger equation of the relative motion between clumps and sub-nuclei is solved according to the boundary conditions of Coulomb wave functions to obtain the decay width. Compared with our previous calculations that did not consider the specific distribution of sub-nuclei and cluster densities, the width of the radioactive decay now obtained is significantly increased. In addition, as the density of the cluster centers gets higher and lower, the calculated value of the decay width decreases.