中国物理B ›› 2008, Vol. 17 ›› Issue (7): 2590-2593.doi: 10.1088/1674-1056/17/7/041

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Single-and-double electron loss of O2+ in collisions with argon and helium

刘玉文, 陈熙萌, 鲁彦霞, 丁宝卫, 付宏斌, 高志民, 崔莹, 邵剑雄, 孙光智, 陈林, 尹永智   

  1. School of Nuclear Science and Technology, Lanzhou University, Lanzhou 730000, China
  • 收稿日期:2007-09-24 修回日期:2007-11-17 出版日期:2008-07-09 发布日期:2008-07-09
  • 基金资助:
    Project supported by the Special Foundation for State Major Basic Research Program of China (Grant No 2002CCA00900).

Single-and-double electron loss of O2+ in collisions with argon and helium

Liu Yu-Wen(刘玉文)†, Chen Xi-Meng(陈熙萌), Lu Yan-Xia(鲁彦霞), Ding Bao-Wei(丁宝卫), Fu Hong-Bin(付宏斌), Gao Zhi-Min(高志民), Cui Ying(崔莹), Shao Jian-Xiong(邵剑雄), Sun Guang-Zhi(孙光智), Chen Lin(陈林), and Yin Yong-Zhi(尹永智)   

  1. School of Nuclear Science and Technology, Lanzhou University, Lanzhou 730000, China
  • Received:2007-09-24 Revised:2007-11-17 Online:2008-07-09 Published:2008-07-09
  • Supported by:
    Project supported by the Special Foundation for State Major Basic Research Program of China (Grant No 2002CCA00900).

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摘要： This paper reports that the ratios of double to single electron loss cross-section (R) of O2+ in collision with Ar and He at the velocity of 1--4\nu0 (\nu0 is the Bohr velocity) have been obtained by the coincidence technique. The trend of R-V in the experiment indicates that the effective charge varies with injected velocity. The effective charge can be obtained by the n-body classical trajectory Monte Carlo method, which is interpreted by the molecular Coulomb over barrier model.

关键词: ion--atom collision, cross-section, electron-loss, effective charge

Abstract: This paper reports that the ratios of double to single electron loss cross-section (R) of O2+ in collision with Ar and He at the velocity of 1--4$\nu_0$ ($\nu_0$ is the Bohr velocity) have been obtained by the coincidence technique. The trend of $R-V$ in the experiment indicates that the effective charge varies with injected velocity. The effective charge can be obtained by the n-body classical trajectory Monte Carlo method, which is interpreted by the molecular Coulomb over barrier model.

Key words: ion--atom collision, cross-section, electron-loss, effective charge

中图分类号:  (Scattering of atoms and molecules)

  • 34.50.-s
31.15.-p (Calculations and mathematical techniques in atomic and molecular physics)