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Investigation of the transfer ionization process in collisions of partially stripped ions on He
作者姓名:刘会平  陈熙萌  欧阳晓平  席发元  苏光辉
作者单位:State Key Laboratory of Multiphase Flow in Power Engineering, Department of Nuclear Science and Technology, Xi'an Jiaotong University, Xi'an 710049, China;School of Nuclear Science and Technology, Lanzhou University, Lanzhou 730000, China;School of Nuclear Science and Technology, Lanzhou University, Lanzhou 730000, China;State Key Laboratory of Multiphase Flow in Power Engineering, Department of Nuclear Science and Technology, Xi'an Jiaotong University, Xi'an 710049, China;School of Nuclear Science and Technology, Lanzhou University, Lanzhou 730000, China;State Key Laboratory of Multiphase Flow in Power Engineering, Department of Nuclear Science and Technology, Xi'an Jiaotong University, Xi'an 710049, China
摘    要: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 0.17q 0.60 ;the energy corresponding to maximum f is about 160q 0.60 keV/u.

关 键 词:ion-atom  collision  transfer  ionization  single  electron  transfer
收稿时间:2009-06-30

Investigation of the transfer ionization process in collisions of partially stripped ions on He
Liu Hui-Ping,Chen Xi-Meng,Ouyang Xiao-Ping,Xi Fa-Yuan and Su Guang-Hui.Investigation of the transfer ionization process in collisions of partially stripped ions on He[J].Chinese Physics B,2010,19(6):63404-063404.
Authors:Liu Hui-Ping  Chen Xi-Meng  Ouyang Xiao-Ping  Xi Fa-Yuan and Su Guang-Hui
Institution:School of Nuclear Science and Technology, Lanzhou University, Lanzhou 730000, China; State Key Laboratory of Multiphase Flow in Power Engineering, Department of Nuclear Science and Technology, Xi'an Jiaotong University, Xi'an 710049, China; State Key Laboratory of Multiphase Flow in Power Engineering, Department of Nuclear Science and Technology, Xi'an Jiaotong University, Xi'an 710049, China;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
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