alpha-Decay calculations of medium mass nuclei within generalized density-dependent cluster model

作者：Ni Dongdong; Ren Zhongzhou

来源：Nuclear Physics A, 2009, 828(3-4): 348-359.

DOI：10.1016/j.nuclphysa.2009.07.014

• alpha-decay
• Cluster model
• Wave functions
• Half-lives

The alpha-decay half-lives of even-even medium mass nuclei have been systematically investigated using a radial wave function within the generalized density-dependent cluster model. The a-decay width is calculated using the overlap integral of the quasi-bound initial state wave function, the scattering final state wave function, and the difference of potentials. The effective alpha-nucleus potential is constructed using the double-folded integral of realistic nucleon-nucleon interactions with the mass density distributions of a particles and daughter nuclei. For comparison calculations are also carried out for the Woods-Saxon shape potential. The present study is restricted to even-even nuclei with 82 < N <= 126, where the shell effect on the alpha-preformation factor has been taken into account for even-even N = 126 isotones. The obtained alpha-decay half-lives are found to agree with the experimental data with a mean factor of less than 2 for both the double-folded potential and the Woods-Saxon shape potential.

• 出版日期2009-9-15
• 单位中国科学院理论物理研究所; 南京大学