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Chin. Phys. B, 2010, Vol. 19(6): 063404    DOI: 10.1088/1674-1056/19/6/063404
ATOMIC AND MOLECULAR PHYSICS Prev   Next  

Investigation of the transfer ionization process in collisions of partially stripped ions on He

Liu Hui-Ping(刘会平)a)b), Chen Xi-Meng(陈熙萌)b), Ouyang Xiao-Ping(欧阳晓平)a), Xi Fa-Yuan(席发元)b), and Su Guang-Hui(苏光辉)a)
a State Key Laboratory of Multiphase Flow in Power Engineering, Department of Nuclear Science and Technology, Xi'an Jiaotong University, Xi'an 710049, China; b School of Nuclear Science and Technology, Lanzhou University, Lanzhou 730000, China
Abstract  In this paper a projectile ion-recoil ion coincidence technique is used to investigate the transfer ionization processes in collisions of 0.22--6.30~MeV C$^{q + }$ ions and 0.25--6.35~MeV O$^{q + }$ ions ($q$ = 1, 2, 3, 4) with the He atom separately. The cross section ratio f of transfer ionization to single electron transfer is measured, and the dependence of f on both charge state q and energy E of the projectiles is investigated. The electron-structure and the mechanisms leading to transfer ionization affect the dependence of f on q and E. Our measurements, along with other data published previously, suggest a similar dependence of f on charge state and energy of projectile for partially stripped ions over a large energy range. The maximum value of f is approximately 0.17$q^{0.60}$; the energy corresponding to maximum f is about 160$q^{0.60}$~keV/u.
Keywords:  ion--atom collision      transfer ionization      single electron transfer  
Received:  30 June 2009      Accepted manuscript online: 
PACS:  34.50.Gb (Electronic excitation and ionization of molecules)  
  34.70.+e (Charge transfer)  

Cite this article: 

Liu Hui-Ping(刘会平), Chen Xi-Meng(陈熙萌), Ouyang Xiao-Ping(欧阳晓平), Xi Fa-Yuan(席发元), and Su Guang-Hui(苏光辉) Investigation of the transfer ionization process in collisions of partially stripped ions on He 2010 Chin. Phys. B 19 063404

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