Projectile electron loss in collisions of light charged ions with helium

doi:10.1088/1674-1056/23/5/053401

中国物理B ›› 2014, Vol. 23 ›› Issue (5): 53401-053401.doi: 10.1088/1674-1056/23/5/053401

• ATOMIC AND MOLECULAR PHYSICS • 上一篇下一篇

Projectile electron loss in collisions of light charged ions with helium

尹永智^a, 王赟^b, 陈熙萌^a

a School of Nuclear Science and Technology, Lanzhou University, Lanzhou 730000, China;
b Department of Radiation Protection, Gansu Provincial Center for Disease Control and Prevention, Lanzhou 730000, China

收稿日期:2013-08-26 修回日期:2013-11-15 出版日期:2014-05-15 发布日期:2014-05-15
基金资助:
Project supported by the Special Program for Key Basic Research of the Ministry of Science and Technology, China (Grant No. 2002CCA00900) and the Fundamental Research Funds for the Central Universities of Ministry of Education of China (Grant No. lzujbky-2013-5).

Projectile electron loss in collisions of light charged ions with helium

Yin Yong-Zhi (尹永智)^a, Wang Yun (王赟)^b, Chen Xi-Meng (陈熙萌)^a

a School of Nuclear Science and Technology, Lanzhou University, Lanzhou 730000, China;
b Department of Radiation Protection, Gansu Provincial Center for Disease Control and Prevention, Lanzhou 730000, China

Received:2013-08-26 Revised:2013-11-15 Online:2014-05-15 Published:2014-05-15
Contact: Chen Xi-Meng E-mail:chenxm@lzu.edu.cn
About author:34.50.Fa; 34.10.+x
Supported by:
Project supported by the Special Program for Key Basic Research of the Ministry of Science and Technology, China (Grant No. 2002CCA00900) and the Fundamental Research Funds for the Central Universities of Ministry of Education of China (Grant No. lzujbky-2013-5).

摘要/Abstract

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.

关键词: ion-atom collision, over-barrier model, electron loss

Abstract: 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.

Key words: ion-atom collision, over-barrier model, electron loss

中图分类号: (Electronic excitation and ionization of atoms (including beam-foil excitation and ionization))

34.50.Fa

34.10.+x (General theories and models of atomic and molecular collisions and interactions (including statistical theories, transition state, stochastic and trajectory models, etc.))

尹永智, 王赟, 陈熙萌. Projectile electron loss in collisions of light charged ions with helium[J]. 中国物理B, 2014, 23(5): 53401-053401.

Yin Yong-Zhi (尹永智), Wang Yun (王赟), Chen Xi-Meng (陈熙萌). Projectile electron loss in collisions of light charged ions with helium[J]. Chin. Phys. B, 2014, 23(5): 53401-053401.

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Projectile electron loss in collisions of light charged ions with helium

Projectile electron loss in collisions of light charged ions with helium

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