Theoretical description of fine structure in the α decay of heavy odd-odd nuclei

被引：22
|
作者：
Ni, Dongdong [1 ]
Ren, Zhongzhou [1 ,2 ,3 ]
机构：
[1] Nanjing Univ, Dept Phys, Nanjing 210093, Jiangsu, Peoples R China
[2] Natl Lab Heavy Ion Accelerator, Ctr Theoret Nucl Phys, Lanzhou 730000, Peoples R China
[3] Kavli Inst Theoret Phys China, Beijing 100190, Peoples R China
来源：
PHYSICAL REVIEW C | 2013年 / 87卷 / 02期
基金：
中国国家自然科学基金;
关键词：
D O I：
10.1103/PhysRevC.87.027602
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 newly developed multichannel cluster model (MCCM), based on the coupled-channel Schrodinger equation with outgoing wave boundary conditions, is extended to study the alpha-decay fine structure in heavy odd-odd nuclei. Calculations are performed for the alpha transitions to favored rotational bands where the unpaired nucleons remain unchanged. The simple WKB barrier penetration formula is also used to evaluate the branching ratios for various daughter states. It is found that the WKB formula seems to overestimate the branching ratios for the second and third members of the favored rotational band, while the MCCM gives a precise description of them without any adjustable parameters. Moreover, the experimental total alpha-decay half-lives are well reproduced within the MCCM. DOI: 10.1103/PhysRevC.87.027602
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页数：4
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