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Chin. Phys. B, 2011, Vol. 20(11): 113402    DOI: 10.1088/1674-1056/20/11/113402

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

Wang Fei, Wang Miao-Miao
Department of Physics, Beijing Institute of Technology, Beijing 100081, China
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.
Keywords:  close-coupling method      electron capture      cross section     
Received:  05 April 2011      Published:  15 November 2011
PACS:  34.70.+e (Charge transfer)  
  34.80.Dp (Atomic excitation and ionization)  
Fund: Project supported by the National Natural Science Foundation of China (Grant No. 10804008).

Cite this article: 

Wang Fei, Wang Miao-Miao Single electron capture in collisions of Nq+ (q=5, 6, 7) ions with helium 2011 Chin. Phys. B 20 113402

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