| 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. |
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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, Beijing
University of Aeronautics and Astronautics, Beijing 100191,
China |
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| 基金项目： | Project supported by the National
Natural Science Foundation of China (Grant No 60572177). |
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| 摘 要： | The α preformation factor and penetration probability
have been analyzed for even--even nuclei of Po, Rn, Ra using
experimental released energies and α decay half-lives in the
frame of the double folding model. It is shown that N=126 is a neutron
magic number from α preformation and shell effects play
an important role in α preformation. The closer the
nucleon number is to the magic number, the more difficult α
formation in the parent nucleus is. The preformation factor can
supply information on the nuclear structure and the penetration
probability 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. |
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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 probability
have been analyzed for even--even nuclei of Po, Rn, Ra using
experimental released energies and α decay half-lives in the
frame of the double folding model. It is shown that N=126 is a neutron
magic number from α preformation and shell effects play
an important role in α preformation. The closer the
nucleon number is to the magic number, the more difficult α
formation in the parent nucleus is. The preformation factor can
supply information on the nuclear structure and the penetration
probability mainly determines α decay half-life. |
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| Keywords: | preformation factor penetration
probability magic number |
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