| Projectile electron loss in collisions of light charged ions with helium |
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| 作者姓名： | 尹永智 王赟 陈熙萌 |
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| 基金项目： | Project supported by the Special Program for Key Basic Research of the Ministry of Science and Technology,China(Grant No.2002CCA00900);the Fundamental Research Funds for the Central Universities of Ministry of Education of China(Grant No.lzujbky-2013-5) |
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| 摘 要： | We investigate the single-electron loss processes of light charged ions （Li^1＋,2＋, C^2＋,3＋,5＋, and O^2＋,3＋） in collisions with helium. To better understand the experimental results, we propose a theoretical model to calculate the cross section of projectile electron loss. In this model, an ionization radius of the incident ion was defined under the classical over-barrier model, and we developed ＂strings＂ to explain the processes of projectile electron loss, which is similar with the molecular over-barrier model. Theoretical calculations are in good agreement with the experimental results for the cross section of single-electron loss and the ratio of double-to-single ionization of helium associated with one-electron loss.
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| 关 键 词： | 电子损失 入射离子 弹丸 氦气 碰撞 经典过垒模型 电荷态 理论计算值 |
Projectile electron loss in collisions of light charged ions with helium |
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| Yin Yong-Zhi,Wang Yun,Chen Xi-Meng.Projectile electron loss in collisions of light charged ions with helium[J].Chinese Physics B,2014(5):244-248. |
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| Authors: | Yin Yong-Zhi Wang Yun Chen Xi-Meng |
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| Abstract: | We investigate the single-electron loss processes of light charged ions(Li1+,2+, C2+,3+,5+, and O2+,3+) in collisions with helium. To better understand the experimental results, we propose a theoretical model to calculate the cross section of projectile electron loss. In this model, an ionization radius of the incident ion was defined under the classical over-barrier model, and we developed "strings" to explain the processes of projectile electron loss, which is similar with the molecular over-barrier model. Theoretical calculations are in good agreement with the experimental results for the cross section of single-electron loss and the ratio of double-to-single ionization of helium associated with one-electron loss. |
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| Keywords: | ion-atom collision over-barrier model electron loss |
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