Multiple ionization of argon accompanied by electron loss and capture of 0.22--6.35 MeV Cq+ ions
Chen Lin(陈林), Chen Xi-Meng(陈熙萌)† , Shao Jian-Xiong(邵剑雄), Lu Yan-Xia(鲁彦霞), Ding Bao-Wei(丁宝卫), Cui Ying(崔莹), Gao Zhi-Min(高志民), Liu Yu-Wen(刘玉文), Du Juan(杜娟), Xie Jiang-Shan(谢江山), Sun Guang-Zhi(孙光智), and Liu Zhao-Yuan(刘兆远）
Department of Modern Physics, Lanzhou University, Lanzhou 730000, China
Abstract In this paper a projectile ions--recoil ions coincidence technique is employed to investigate the target ionization and projectile charge state changing processes in the collision of 0.22--6.35 MeV Cq+(q = 1-4) ions with argon atoms. The partial cross section ratios of the double, triple, quadruplicate ionization to the single ionization (or the single capture) of argon associated with single electron loss (or single electron capture) by the projectile are measured and compared with the previous experimental results. In the present experiment, it is observed that the ratios of ionization cross sections R associated with single loss and single capture depend strongly on the projectile charge state and vary significantly with different reaction channels as impact energy increases. In addition, this paper gets empirical scaling laws for the ionization cross section ratios R corresponding to the projectile single loss and finds that the ratios of the double ionization to the single ionization associated with single electron capture remain constant in the present energy range.
Received: 10 November 2006
Revised: 16 December 2006
Accepted manuscript online:
PACS:
34.50.Fa
(Electronic excitation and ionization of atoms (including beam-foil excitation and ionization))
(Atom and radical reactions; chain reactions; molecule-molecule reactions)
Fund: Project supported by the Special Program for Key Basic Research of the
Ministry of Science and Technology, China (Grant No 2002CCA00900).
Cite this article:
Chen Lin(陈林), Chen Xi-Meng(陈熙萌), Shao Jian-Xiong(邵剑雄), Lu Yan-Xia(鲁彦霞), Ding Bao-Wei(丁宝卫), Cui Ying(崔莹), Gao Zhi-Min(高志民), Liu Yu-Wen(刘玉文), Du Juan(杜娟), Xie Jiang-Shan(谢江山), Sun Guang-Zhi(孙光智), and Liu Zhao-Yuan(刘兆远） Multiple ionization of argon accompanied by electron loss and capture of 0.22--6.35 MeV Cq+ ions 2007 Chinese Physics 16 2378
Studies of K-shell x-ray energy shifts induced by MeV/u heavy ions Song Zhang-Yong(宋张勇), Yang Zhi-Hu(杨治虎), Shao Jian-Xiong(邵剑雄), Cui Ying(崔莹), Zhang Hong-Qiang(张红强), Ruan Fang-Fang(阮芳芳), Du Juan(杜鹃), Gao Zhi-Min(高志民), Yu De-Yang(于得洋), Chen Xi-Meng(陈熙萌), and Cai Xiao-Hong(蔡晓红). Chin. Phys. B, 2009, 18(4): 1443-1450.
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