| Investigation of transfer ionization in collisions of partially stripped carbon ions with helium at low to intermediate velocities |
| |
| 作者姓名： | 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 |
| |
| 作者单位： | School of Nuclear Science and Technology, Lanzhou
University, Lanzhou 730000, China;School of Nuclear Science and Technology, Lanzhou
University, Lanzhou 730000, China;School of Nuclear Science and Technology, Lanzhou
University, Lanzhou 730000, China;School of Nuclear Science and Technology, Lanzhou
University, Lanzhou 730000, China;School of Nuclear Science and Technology, Lanzhou
University, Lanzhou 730000, China;School of Nuclear Science and Technology, Lanzhou
University, Lanzhou 730000, China;School of Nuclear Science and Technology, Lanzhou
University, Lanzhou 730000, China;School of Nuclear Science and Technology, Lanzhou
University, Lanzhou 730000, China;School of Nuclear Science and Technology, Lanzhou
University, Lanzhou 730000, China;School of Nuclear Science and Technology, Lanzhou
University, Lanzhou 730000, China;School of Nuclear Science and Technology, Lanzhou
University, Lanzhou 730000, China;School of Nuclear Science and Technology, Lanzhou
University, Lanzhou 730000, China |
| |
| 基金项目： | Project supported by the Special
Program for Key Basic Research of the Ministry of Science and
Technology, China (Grant No 2002CCA00900). |
| |
| 摘 要： | The ratios of transfer ionization （TI） to single-electron capture （SC） cross sections have been measured for the collisions of partially stripped C^q＋ ions （q = 1-4） with He. The collision velocity ranges from 0.7 to 4.4 vo （vo 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 3.7 vo. 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.
|
| 关 键 词： | 离子 原子 碰撞实验 电离化 电子捕获 |
| 收稿时间： | 2006-08-16 |
| 修稿时间： | 2/5/2007 12:00:00 AM |
Investigation of transfer ionization in collisions of partially stripped carbon ions with helium at low to intermediate velocities |
| |
| Chen Xi-Meng,Gao Zhi-Min,Liu Zhao-Yuan,Ding Bao-Wei,Lu Yan-Xi,Fu Hong-Bin,Shao Jian-Xiong,Cui Ying,Zhang Hong-Qiang,Liu Yu-Wen,Du Juan and Sun Guang-Zhi.Investigation of transfer ionization in collisions of partially stripped carbon ions with helium at low to intermediate velocities[J].Chinese Physics B,2007,16(7):2040-2043. |
| |
| Authors: | Chen Xi-Meng Gao Zhi-Min Liu Zhao-Yuan Ding Bao-Wei Lu Yan-Xi Fu Hong-Bin Shao Jian-Xiong Cui Ying Zhang Hong-Qiang Liu Yu-Wen Du Juan and Sun Guang-Zhi |
| |
| Institution: | 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. |
| |
| Keywords: | ion--atom collision transfer
ionization electron capture cross-section ratios |
| 本文献已被 维普 等数据库收录！ |
| 点击此处可从《中国物理 B》浏览原始摘要信息 |
| 点击此处可从《中国物理 B》下载免费的PDF全文 |
|
