中国物理B ›› 2007, Vol. 16 ›› Issue (7): 2040-2043.doi: 10.1088/1009-1963/16/7/039
陈熙萌, 高志民, 刘兆远, 丁宝卫, 鲁彦霞, 付宏斌, 邵剑雄, 崔莹, 张红强, 刘玉文, 杜娟, 孙光智
Chen Xi-Meng(陈熙萌), Gao Zhi-Min(高志民)†, Liu Zhao-Yuan(刘兆远), Ding Bao-Wei(丁宝卫), Lu Yan-Xia(鲁彦霞), Fu Hong-Bin(付宏斌), Shao Jian-Xiong(邵剑雄), Cui Ying(崔莹), Zhang Hong-Qiang(张红强), Liu Yu-Wen(刘玉文), Du Juan(杜娟), and Sun Guang-Zhi(孙光智)
摘要: The ratios of transfer ionization (TI) to single-electron capture (SC) cross sections have been measured for the collisions of partially stripped Cq+ ions (q=1--4) with He. The collision velocity ranges from 0.7 to 4.4v0 (v0 is the Bohr velocity). The projectile-ion and recoil-ion coincidence technique is used to separate the processes of TI and SC. The ratios reach the maximum when the velocity is about 3.7v0 This can be explained qualitatively based on the two-step mechanism. The experimental results are also compared with the results calculated using the classical trajectory Monte Carlo (CTMC) method. The CTMC results are in agreement with the experimental data basically. The discrepancies in higher velocity region are interpreted by the effective charge effect.
中图分类号: (Electronic excitation and ionization of atoms (including beam-foil excitation and ionization))