| 类锂离子与He原子碰撞中的单电子丢失 |
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| 引用本文： | 刘锦鹏,赵永龙,景龙,丁宝卫.类锂离子与He原子碰撞中的单电子丢失[J].原子能科学技术,2014,48(7):1153-1158. |
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| 作者姓名： | 刘锦鹏 赵永龙 景龙 丁宝卫 |
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| 作者单位： | 兰州大学 核科学与技术学院，甘肃 兰州730000 |
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| 基金项目： | 国家自然科学基金资助项目(10704030);教育部留学回国人员科研启动基金资助项目;甘肃省自然科学基金资助项目(1107RJZA096) |
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| 摘 要： | 本文基于Bohr-Lindhard(B-L)模型,考虑了碰撞双方的电子密度分布,计算了能量为20~900keV/u的B2+、C3+、N4+及O5+等类锂离子与He原子碰撞中的单电子丢失(SEL)、伴随单电离的单电子丢失(SELSI)、伴随双电离的单电子丢失(SELDI)等截面对能量的依赖曲线,计算结果与已有的实验数据符合较好。分析发现,对于一给定的过程,较重的离子有较小的有效碰撞参数范围;对于同一种入射离子,SEL、SELSI和SELDI等过程对应的有效碰撞参数范围依次减小。
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| 关 键 词： | 电子丢失 电离 类锂离子 |
Single-electron Loss in Collision of Lithium-like Ion With He Atom |
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| LIU Jin-peng,ZHAO Yong-long,JING Long,DING Bao-wei.Single-electron Loss in Collision of Lithium-like Ion With He Atom[J].Atomic Energy Science and Technology,2014,48(7):1153-1158. |
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| Authors: | LIU Jin-peng ZHAO Yong-long JING Long DING Bao-wei |
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| Affiliation: | School of Nuclear Science and Technology, Lanzhou University, Lanzhou 730000, China |
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| Abstract: | The cross sections for single-electron loss (SEL), single-electron loss associated with single ionization (SELSI) and single-electron loss associated with double ionization (SELDI) in collisions of lithium-like ions B2+, C3+, N4+ and O5+ with helium atom in the energy range from 20 to 900 keV/u were calculated by considering the distribution of both target and projectile electrons based on the Bohr-Lindhard (B-L) model. The calculated results were compared with the available experimental data. The analysis shows that the heavier the ion, the smaller the impact parameter for a given process and the impact parameters for SEL, SELSI and SELDI decrease successively for a given ion. |
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| Keywords: | electron loss ionization lithium-like ion |
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