| α preformation and penetration probability for heavy nuclei |
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| 引用本文： | 张高龙,乐小云. α preformation and penetration probability for heavy nuclei[J]. 中国物理 B, 2009, 18(9): 3810-3814. DOI: 10.1088/1674-1056/18/9/032 |
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| 作者姓名： | 张高龙 乐小云 |
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| 作者单位： | School of Physics and Nuclear Energy Engineering, BeijingUniversity of Aeronautics and Astronautics, Beijing 100191,China |
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| 基金项目： | Project supported by the NationalNatural Science Foundation of China (Grant No 60572177). |
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| 摘 要： | The α preformation factor and penetration probabilityhave been analyzed for even--even nuclei of Po, Rn, Ra usingexperimental released energies and α decay half-lives in theframe of the double folding model. It is shown that N=126 is a neutronmagic number from α preformation and shell effects playan important role in α preformation. The closer thenucleon number is to the magic number, the more difficult αformation in the parent nucleus is. The preformation factor cansupply information on the nuclear structure and the penetrationprobability mainly determines α decay half-life.
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| 关 键 词： | preformation factor penetration probability magic number |
| 收稿时间： | 2008-12-29 |
$alpha$ preformation and penetration probability for heavy nuclei |
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| Zhang Gao-Long and Le Xiao-Yun. $alpha$ preformation and penetration probability for heavy nuclei[J]. Chinese Physics B, 2009, 18(9): 3810-3814. DOI: 10.1088/1674-1056/18/9/032 |
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| Authors: | Zhang Gao-Long and Le Xiao-Yun |
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| Affiliation: | School of Physics and Nuclear Energy Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100191, China |
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| Abstract: | The α preformation factor and penetration probabilityhave been analyzed for even--even nuclei of Po, Rn, Ra usingexperimental released energies and α decay half-lives in theframe of the double folding model. It is shown that N=126 is a neutronmagic number from α preformation and shell effects playan important role in α preformation. The closer thenucleon number is to the magic number, the more difficult αformation in the parent nucleus is. The preformation factor cansupply information on the nuclear structure and the penetrationprobability mainly determines α decay half-life. |
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| Keywords: | preformation factor penetrationprobability magic number |
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