Half-lives and cluster preformation factors for various cluster emissions in trans-lead nuclei

被引:102
作者
Ni, Dongdong [1 ,2 ]
Ren, Zhongzhou [1 ,2 ,3 ]
机构
[1] Nanjing Univ, Dept Phys, Nanjing 210093, Peoples R China
[2] Kavli Inst Theoret Phys China, Beijing 100190, Peoples R China
[3] Natl Lab Heavy Ion Accelerator, Ctr Theoret Nucl Phys, Lanzhou 730000, Peoples R China
来源
PHYSICAL REVIEW C | 2010年 / 82卷 / 02期
基金
中国国家自然科学基金;
关键词
DECAY; MODEL; RADIOACTIVITY; POTENTIALS; SCATTERING;
D O I
10.1103/PhysRevC.82.024311
中图分类号
O57 [原子核物理学、高能物理学];
学科分类号
070202 ;
摘要
The generalized density-dependent cluster model (GDDCM) is extended to study cluster radioactivity in even-even and odd-Anuclei decaying to the doublymagic nucleus Pb-208 or its neighboring nuclei. Themicroscopic cluster-daughter potential is numerically constructed in the double-folding model with M3Y nucleon-nucleon interactions plus proton-proton Coulomb interactions. Instead of the WKB barrier penetration probability, the exact solution of the Schrodinger equation with outgoing Coulomb wave boundary conditions is presented. The cluster preformation factor is well taken into account based on some available experimental cases. The calculated half-lives are found to be in good agreement with the experimental data. This indicates that a unified description of a decay and cluster radioactivity has been achieved by the GDDCM. Predictions of cluster emission half-lives are made for promising emitters, which may guide future experiments.
引用
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页数:9
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