Investigation of transfer ionization in collisions of partially stripped carbon ions with helium at low to intermediate velocities
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)
School of Nuclear Science and Technology, Lanzhou University, Lanzhou 730000, China
Abstract 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.
Received: 16 August 2006
Revised: 05 February 2007
Accepted manuscript online:
PACS:
34.50.Fa
(Electronic excitation and ionization of atoms (including beam-foil excitation and ionization))
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 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) Investigation of transfer ionization in collisions of partially stripped carbon ions with helium at low to intermediate velocities 2007 Chinese Physics 16 2040
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). Chin. Phys. B, 2008, 17(7): 2590-2593.
Altmetric calculates a score based on the online attention an article receives. Each coloured thread in the circle represents a different type of online attention. The number in the centre is the Altmetric score. Social media and mainstream news media are the main sources that calculate the score. Reference managers such as Mendeley are also tracked but do not contribute to the score. Older articles often score higher because they have had more time to get noticed. To account for this, Altmetric has included the context data for other articles of a similar age.
