Multi-Electron Processes in 4.15--11.08keV/u13C6+ on Argon Collisions
RUAN Fang-Fang 1,2, CAI Xiao-Hong 1, YU De-Yang 1, LU Rong-Chun 1,2, SHAO Cao-Jie 1, LI Ming-Sheng 1,2, ZHANG Hong-Qiang 3, CUI Ying 3, SHAO Jian-Xiong 3, DING Bao-Wei 3, XUE Ying-Li 1,2, QI De-Jun 1,2, YANG Zhi-Hu 1, CHEN Xi-Meng 3
1Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 7300002Graduate School of the Chinese Academy of Sciences, Beijing 1000493Department of Modern Physics, Lanzhou University, Lanzhou 730000
Multi-Electron Processes in 4.15--11.08keV/u13C6+ on Argon Collisions
1Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 7300002Graduate School of the Chinese Academy of Sciences, Beijing 1000493Department of Modern Physics, Lanzhou University, Lanzhou 730000
摘要The relative partial cross sections for 13C6+--Ar collisions at 4.15--11.08keV/u incident energy are measured. The cross-section ratios σ2E/σSC,σ3E/σSC, σ4E σSC and σ5EσSC are approximately the constants of 0.51±0.05, 0.20±0.03, 0.06±0.03 and 0.02±0.01 in this region. The significance of the multi-electron process in highly charged ions (HCIs) with argon collisions is demonstrated (σME/σSC as high as 0.79±0.06). In multi-electron processes, it is shown that transfer ionization is dominant while pure electron capture is weak and negligible. For all reaction channels, the cross-sections are independent of the incident energy in the present energy region, which is in agreement with the static characteristic of classic models, i.e. the molecular Coulomb over-the-barrier model (MCBM), the extended classical over-the-barrier model (ECBM) and the semiempirical scaling laws (SL). The result is compared with these classical models and with our previous work of 13C6+-Ne collisions [Chin. Phys. Lett. 23(2006)95].
Abstract：The relative partial cross sections for 13C6+--Ar collisions at 4.15--11.08keV/u incident energy are measured. The cross-section ratios σ2E/σSC,σ3E/σSC, σ4E σSC and σ5EσSC are approximately the constants of 0.51±0.05, 0.20±0.03, 0.06±0.03 and 0.02±0.01 in this region. The significance of the multi-electron process in highly charged ions (HCIs) with argon collisions is demonstrated (σME/σSC as high as 0.79±0.06). In multi-electron processes, it is shown that transfer ionization is dominant while pure electron capture is weak and negligible. For all reaction channels, the cross-sections are independent of the incident energy in the present energy region, which is in agreement with the static characteristic of classic models, i.e. the molecular Coulomb over-the-barrier model (MCBM), the extended classical over-the-barrier model (ECBM) and the semiempirical scaling laws (SL). The result is compared with these classical models and with our previous work of 13C6+-Ne collisions [Chin. Phys. Lett. 23(2006)95].
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2007, Vol. 24 
