| Effects of Isospin Equilibrium on Cold Fusion of Superheavy Nuclei |
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| 作者姓名： | 刘祖华 包景东 |
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| 作者单位： | [1]Key Laboratory of Beam Technology and Material Modification of Ministry of Education, Beijing Normal University, Beijing 100875 [2]Department of Physics, Beijing Normal University, Beijing 100875 [3]China Institute of Atomic Energy, Beijing 102413 |
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| 基金项目： | Supported by the National Natural Science Foundation of China under Grants Nos 10235020 and 10235030, and the Major State Basic Research Development Programme under Grant No G200007400. |
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| 摘 要： |
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| 关 键 词： | 同位旋平衡 超重元素核子 冷聚变 中子流 |
| 收稿时间： | 2005-07-28 |
| 修稿时间： | 2005-07-28 |
Effects of Isospin Equilibrium on Cold Fusion of Superheavy Nuclei |
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| LIU Zu-Hua, BAO Jing-Dong.Effects of Isospin Equilibrium on Cold Fusion of Superheavy Nuclei[J].Chinese Physics Letters,2005,22(12):3044-3047. |
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| Authors: | LIU Zu-Hua BAO Jing-Dong |
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| Abstract: | The neutron flow model predicts that neutrons start to flow freely between the approaching nuclei ^58Fe and ^208 pb at s=3fm, a length in which the effective surfaces of these nuclei are 3 fm apart. As a result of neutron flow, the N/Z value rapidly reaches an equilibrium distribution. Meanwhile the system, originally in the fusion valley, is injected into the asymmetric fission valley. The dynamic process of the composite nucleus in the asymmetric fission valley is treated with a two-parameter Smoluchowski equation. It is shown that the probability to overcome the asymmetric fission barrier and to achieve compound nucleus configuration, hence the fusion cross section is obviously suppressed due to the effect of isospin equilibrium. |
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