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| 用He离子诱导的裂变激发函数探测核摩擦强度(英文) | |
| 引用本文： | 叶巍. 用He离子诱导的裂变激发函数探测核摩擦强度(英文)[J]. 原子核物理评论, 2014, 31(3): 344-349. DOI: 10.11804/NuclPhysRev.31.03.344 |
| 作者姓名： | 叶巍 |
| 作者单位： | 东南大学物理系,南京 210096 |
| 基金项目： | National Natural Science Foundation of China(11075034)~~ |
| 摘 要： | 随机模型被用于分析3He+197Au,3He+208Pb和3He 186W反应测量的裂变激发函数。提取的鞍点前摩擦强度约为4×1021s-1。揭示了能级密度参数的大小在约束核摩擦强度中的作用。计算表明,高激发条件能能显著增强裂变截面对核耗散的敏感性。 |
| 关 键 词： | 裂变激发函数 核摩擦 Langevin 模型 能级密度参数 |
| 收稿时间： | 1900-01-01 |
Nuclear Friction Determined with He-ion Induced Fission Excitation Functions |
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| YE Wei. Nuclear Friction Determined with He-ion Induced Fission Excitation Functions[J]. Nuclear Physics Review, 2014, 31(3): 344-349. DOI: 10.11804/NuclPhysRev.31.03.344 | |
| Authors: | YE Wei |
| Affiliation: | Department of Physics, Southeast University, Nanjing 210096, China |
| Abstract: | The stochastic approach to ssion is employed to analyze measured ssion excitation functions in the reactions 3He+197Au, 3He+208Pb and 3He+186W. A pre-saddle friction strength of about 4 x 1021 s-1is extracted by comparing theoretical calculations with experimental data. The important role of level-density parameters in accurately determining the strength of nuclear friction is revealed.It is further shown that high-energy conditions can enhance the sensitivity of ssion cross sections to nuclear dissipation. |
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