| He原子价壳层跃迁的电子碰撞研究 |
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| 引用本文： | 刘小井,朱林繁,苑震生,李文斌,成华东,徐克尊. He原子价壳层跃迁的电子碰撞研究[J]. 原子核物理评论, 2002, 19(2): 298-300. DOI: 10.11804/NuclPhysRev.19.02.298 |
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| 作者姓名： | 刘小井 朱林繁 苑震生 李文斌 成华东 徐克尊 |
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| 作者单位： | 中国科学技术大学选键化学重点实验室 近代物理系; |
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| 基金项目： | 国家自然科学基金资助项目(10134010, 10004010); 中国科学技术大学青年基金资助 |
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| 摘 要： | 在入射电子能量 2 5 0 0eV下测量了He的 11S→ 2 1S ,2 1P ,31S和 31P的微分散射截面和广义振子强度 ,并与前人的实验和理论结果进行了比较 ,认为在此入射电子能量下一阶Born近似对此 4个跃迁成立. With electron impact energy of 2 500 eV and energy resolution of 85 meV, the differential cross sections and the generalized oscillator strengths of the excitations of 1 1S→2 1S, 2 1P, 3 1S and 3 1P of helium has been measured by electron energy loss spectroscopy . Comparing with previous experimental and theoretical results, it seems that the first Born approximation is valid for these excitations under such an electron impact energy.
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| 关 键 词： | 跃迁 微分散射截面 广义振子强度 |
| 文章编号： | 1007-4627(2002)02-0298-03 |
| 收稿时间： | 1900-01-01 |
| 修稿时间： | 2002-03-05 |
Investigation of Valence-shell Excitations of Helium by Electron Impact |
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| LIU Xiao-jing,ZHU Lin-fan,YUAN Zhen-sheng,LI Wen-bin,CHEN Hua-dong,XU Ke-zun. Investigation of Valence-shell Excitations of Helium by Electron Impact[J]. Nuclear Physics Review, 2002, 19(2): 298-300. DOI: 10.11804/NuclPhysRev.19.02.298 |
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| Authors: | LIU Xiao-jing ZHU Lin-fan YUAN Zhen-sheng LI Wen-bin CHEN Hua-dong XU Ke-zun |
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| Affiliation: | (Key Laboratory of Band-selective Chemistry; Department of Modern Physics; University of Science and Technology of China; Hefei 230027; China); |
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| Abstract: | With electron impact energy of 2 500 eV and energy resolution of 85 meV, the differential cross sections and the generalized oscillator strengths of the excitations of 1 1S→2 1S, 2 1P, 3 1S and 3 1P of helium has been measured by electron energy loss spectroscopy . Comparing with previous experimental and theoretical results, it seems that the first Born approximation is valid for these excitations under such an electron impact energy. |
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