| 重核存活几率的N/Z效应 |
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| 引用本文： | 叶巍,杨宏伟.重核存活几率的N/Z效应[J].中国物理 C,2008,32(1):49-51. |
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| 作者姓名： | 叶巍 杨宏伟 |
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| 作者单位： | Department of Physics, Southeast University, Nanjing 210096, China |
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| 基金项目： | Supported by National Natural Science Foundation of China （10405007） |
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| 摘 要： | 用Langevin方程计算了重核 194Pb, 200Pb和206Pb的蒸发残余形成几率。结果表明系统中质比(N/Z）影响了该几率大小，并且高的N/Z增加了重核存活几率。这是由于裂变位垒和鞍点前粒子发射依赖于系统N/Z的缘故。
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| 关 键 词： | 多样性 方程式 计算方法 核技术 |
| 收稿时间： | 2007-01-17 |
| 修稿时间： | 2007-3-16 |
Effects of N/Z on survival probability of heavy nuclei |
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| YE Wei,YANG Hong-Wei.Effects of N/Z on survival probability of heavy nuclei[J].High Energy Physics and Nuclear Physics,2008,32(1):49-51. |
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| Authors: | YE Wei YANG Hong-Wei |
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| Abstract: | The excitation functions of the evaporation residue formation probability of three heavy nuclei ~(194)pb,~(200)Pb and ~(206)Pb are calculated by using a Langevin equation coupled with a statistical decay model. The results show that the neutron-to-proton ratio(N/Z)of a compound nucleus has an effect on survival probability and this effect becomes larger with increasing N/Z.This is because the fission barrier and the pre-saddle particle emission depend on the N/Z ratio of the system. |
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| Keywords: | N/Z effect survival probability pre-saddle particle multiplicity Langevin equation |
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