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Chin. Phys., 2007, Vol. 16(8): 2378-2383    DOI: 10.1088/1009-1963/16/8/037
ATOMIC AND MOLECULAR PHYSICS Prev   Next  

Multiple ionization of argon accompanied by electron loss and capture of 0.22--6.35 MeV Cq+ ions

Chen Lin, Chen Xi-Meng, Shao Jian-Xiong, Lu Yan-Xia, Ding Bao-Wei, Cui Ying, Gao Zhi-Min, Liu Yu-Wen, Du Juan, Xie Jiang-Shan, Sun Guang-Zhi, Liu Zhao-Yuan
Department of Modern Physics, Lanzhou University, Lanzhou 730000, China
Abstract  In this paper a projectile ions--recoil ions coincidence technique is employed to investigate the target ionization and projectile charge state changing processes in the collision of 0.22--6.35 MeVCq+(q = 1-4) ions with argon atoms. The partial cross section ratios of the double, triple, quadruplicate ionization to the single ionization (or the single capture) of argon associated with single electron loss (or single electron capture) by the projectile are measured and compared with the previous experimental results. In the present experiment, it is observed that the ratios of ionization cross sections R associated with single loss and single capture depend strongly on the projectile charge state and vary significantly with different reaction channels as impact energy increases. In addition, this paper gets empirical scaling laws for the ionization cross section ratios R corresponding to the projectile single loss and finds that the ratios of the double ionization to the single ionization associated with single electron capture remain constant in the present energy range.
Keywords:  ion-atom collisions      multiple ionization      electron loss      electron capture     
Received:  10 November 2006      Published:  20 August 2007
PACS:  34.50.Fa (Electronic excitation and ionization of atoms (including beam-foil excitation and ionization))  
  34.70.+e (Charge transfer)  
  82.30.Cf (Atom and radical reactions; chain reactions; molecule-molecule reactions)  
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 Lin, Chen Xi-Meng, Shao Jian-Xiong, Lu Yan-Xia, Ding Bao-Wei, Cui Ying, Gao Zhi-Min, Liu Yu-Wen, Du Juan, Xie Jiang-Shan, Sun Guang-Zhi, Liu Zhao-Yuan Multiple ionization of argon accompanied by electron loss and capture of 0.22--6.35 MeV Cq+ ions 2007 Chin. Phys. 16 2378

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