中国物理B ›› 2011, Vol. 20 ›› Issue (11): 113402-113402.doi: 10.1088/1674-1056/20/11/113402

• • 上一篇    下一篇

Single electron capture in collisions of Nq+ (q=5, 6, 7) ions with helium

王菲, 王苗苗   

  1. Department of Physics, Beijing Institute of Technology, Beijing 100081, China
  • 收稿日期:2011-04-05 修回日期:2011-04-25 出版日期:2011-11-15 发布日期:2011-11-15
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant No. 10804008).

Single electron capture in collisions of Nq+ (q=5, 6, 7) ions with helium

Wang Fei(王菲)† and Wang Miao-Miao(王苗苗)   

  1. Department of Physics, Beijing Institute of Technology, Beijing 100081, China
  • Received:2011-04-05 Revised:2011-04-25 Online:2011-11-15 Published:2011-11-15
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant No. 10804008).

PDF (PC)

618

赞

摘要： Close-coupling calculations are carried out for cross sections of the single electron capture in collisions of Nq+ (q = 5, 6, 7) ions with helium atoms in the collision velocity range from 0.3 a.u. to 1.8 a.u. The relative importances of the single ionization (SI) to the single capture (SC) are investigated for the Nq+ (q = 5, 6, 7) projectiles, respectively. The SI/SC cross section ratio for the N7+ projectile obtained from our calculations is in excellent agreement with the experimental data. The ratio curves also show us distinct behaviours when the charge of the projectile is different. The partial electron capture cross sections for different projectiles indicate that the electron on the target He atom tends to be captured by the projectile into its lower orbital of the outer shell with the decreasing projectile charge.

关键词: close-coupling method, electron capture, cross section

Abstract: Close-coupling calculations are carried out for cross sections of the single electron capture in collisions of Nq+ (q = 5, 6, 7) ions with helium atoms in the collision velocity range from 0.3 a.u. to 1.8 a.u. The relative importances of the single ionization (SI) to the single capture (SC) are investigated for the Nq+ (q = 5, 6, 7) projectiles, respectively. The SI/SC cross section ratio for the N7+ projectile obtained from our calculations is in excellent agreement with the experimental data. The ratio curves also show us distinct behaviours when the charge of the projectile is different. The partial electron capture cross sections for different projectiles indicate that the electron on the target He atom tends to be captured by the projectile into its lower orbital of the outer shell with the decreasing projectile charge.

Key words: close-coupling method, electron capture, cross section

中图分类号:  (Charge transfer)

  • 34.70.+e
34.80.Dp (Atomic excitation and ionization)