| 100,104Sn核在裂变过程中发射的轻粒子多重性 |
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| 引用本文： | 叶巍.100,104Sn核在裂变过程中发射的轻粒子多重性[J].中国物理 C,2006,30(3):217-219. |
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| 作者姓名： | 叶巍 |
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| 作者单位： | 东南大学物理系,南京210096 |
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| 基金项目： | 中国科学院资助项目
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东南大学校科研和教改项目 |
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| 摘 要： | 用扩散模型考察了轻的幻核100Sn在裂变过程中蒸发的轻粒子多重性. 发现壳仅对质子的发射有很强的影响, 而对中子几乎没有影响, 这与132Sn核的情况正好相反. 因此把这种现象归因于系统中质比(N/Z)的影响. 通过比较104Sn和100Sn发射的粒子, N/Z的
影响得到了进一步证实. 计算发现高激发能弱化了N/Z效应.
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| 关 键 词： | 壳效应 断前粒子多重性 中质比 扩散模型 |
| 收稿时间： | 2005-04-12 |
| 修稿时间： | 2005-04-12 |
Particle Evaporation in the Fission Process of Nuclei 100,104Sn |
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| YE Wei.Particle Evaporation in the Fission Process of Nuclei 100,104Sn[J].High Energy Physics and Nuclear Physics,2006,30(3):217-219. |
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| Authors: | YE Wei |
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| Institution: | Department of Physics,Southeast University, Nanjing 210096, China |
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| Abstract: | The particle evaporation in the fission process of ^100Sn is studied using a diffusion model. It is shown that the shell influences strongly the proton emission whereas its effect on neutron emission is negligible, in contrast with the case of ^132Sn. It is due to the effect of the difference of neutron-to-proton ratio, N/Z, of the systems. This conclusion is further verified by comparing particle emission between ^100Sn and ^104Sn. Calculations indicate that high excitation energy weakens this N/Z effect. |
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| Keywords: | shell effect pre-scission particle multiplicity neutron-to-proton ratio diffusion model |
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