| 重核熔合与裂变位垒的动力学回流现象 |
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| 引用本文： | 刘玲,吕坤,包景东.重核熔合与裂变位垒的动力学回流现象[J].中国物理 C,2004,28(8):854-858. |
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| 作者姓名： | 刘玲 吕坤 包景东 |
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| 作者单位： | [1]北京师范大学物理系,北京100875 [2]北京师范大学低能核物理研究所,北京100875 |
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| 基金项目： | 国家自然科学基金 (10 0 75 0 0 7,10 2 3 5 0 2 0 )，教育部跨世纪优秀人才项目资助~~ |
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| 摘 要： | 用实验粒子多次通过位垒的方法计算重核熔合与裂变过程中的熔合几率和裂变速率,结果发现位垒附近存在着一种强烈的回流现象.研究还表明当鞍点后势变得平滑,则回流变大.这种效应降低了以往所用的实验粒子首次通过位垒方法得到的熔合几率和裂变速率,从而给出这两种量的正确描述
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| 关 键 词： | 鞍点回流 熔合几率 裂变速率 多次通过鞍点 |
| 收稿时间： | 2003-12-5 |
Dynamic Back-Streaming Effects around Fusion and Fission Barriers of Heavy Nuclei |
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| Abstract: | The passing probability of nuclear fusion and the fission rate at the saddle point is calculated by an improved scheme with test particle muti passing over the saddle point,where a strong back streaming effect around the saddle is found and considered.It is also found that the back streaming becomes stronger if the post saddle barrier gets smoother.Fusion probability and fission rate,which are simulated usually via test particle first passing over the saddle model,are decreased by the back streaming effect. |
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| Keywords: | back-streaming effect fusion probability fission rate multi-passing over saddle point |
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