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非全裸离子-原子碰撞中的多重电离研究
引用本文:蔡晓红,马新文,刘惠萍,杨治虎,于得洋,陈熙萌,刘兆远,申自勇,吕魁.非全裸离子-原子碰撞中的多重电离研究[J].原子核物理评论,2000,17(3):179-182.
作者姓名:蔡晓红  马新文  刘惠萍  杨治虎  于得洋  陈熙萌  刘兆远  申自勇  吕魁
作者单位:1中国科学院近代物理研究所;2 兰州大学现代物理系
基金项目:中国科学院资助项目,核工业科学基金,王宽诚教育基金 
摘    要:利用加速器提供的非全裸重离子束 (q=1 - 4)轰击氦、氖和氩原子 ,研究了由非全裸离子引起原子多重电离的有效电荷效应和电荷交换效应 .提出用一个有效电荷来等价描述非全裸入射离子对靶原子的作用 ,将描述全裸离子 -原子碰撞过程的物理模型推广到处理非全裸离子 -原子碰撞过程 ,采用轨道贯穿模型对有效电荷的内在物理机制进行了解释 ,提出一种新的理论方法将多重电离中俄歇过程的贡献予以扣除 .通过研究发现 ,扣除俄歇过程贡献后 ,多重电离截面随入射离子q/ v的变化与多步过程的预言相符.The partially stripped C q+ , O q+ and F q+ ions (q=1-4) delivered by a 2×1.7 MV tandem accelerator were employed to bombard He, Ne and Ar targets. The cross section ratios of multiple ionization to single ionization were measured for different collision systems by using time of flight technique. The effective charge effects and charge exchange processes were studied. By using an effective charge q eff , the multiple ionization processes induced by partially stripped ions could...

关 键 词:离子-原子碰撞    多重电离    截面
收稿时间:1900-01-01

Multiple Ionization in Partially Stripped Ion-atom Collisions
CAI Xiao-hong,MA Xin-wen,LIU Hui-ping,YANG Zhi-hu,YU De-yang,CHEN Xi-meng,LIU Zhao-yuan,SHEN Zi-yong,LU kui.Multiple Ionization in Partially Stripped Ion-atom Collisions[J].Nuclear Physics Review,2000,17(3):179-182.
Authors:CAI Xiao-hong  MA Xin-wen  LIU Hui-ping  YANG Zhi-hu  YU De-yang  CHEN Xi-meng  LIU Zhao-yuan  SHEN Zi-yong  LU kui
Institution:1 Institute of Modern Physics; the Chinese Academy of Sciences; Lanzhou 730000; China2 Department of Modern Physics; Lanzhou University;
Abstract:The partially stripped C q+ , O q+ and F q+ ions (q=1-4) delivered by a 2×1.7 MV tandem accelerator were employed to bombard He, Ne and Ar targets. The cross section ratios of multiple ionization to single ionization were measured for different collision systems by using time of flight technique. The effective charge effects and charge exchange processes were studied. By using an effective charge q eff , the multiple ionization processes induced by partially stripped ions could...
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