We present a non-perturbative classical treatment of the charge transfer and ionization processes in collisions between singly charged lithium ions with helium and nitrogen atomic targets. Single capture and single ionization total cross sections are calculated using a three-body classical trajectory Monte Carlo (CTMC) method in which the interaction between the collision partners is described by a Garvey-type model potential. The cross sections are evaluated for collision energies between 20 keV and 100 MeV. In particular, we found excellent agreement between our results and the available experimental data for the case of the single capture of He(1s) by Li+ ions. In addition, our CTMC results are in a reasonable agreement with the experimental results for collision energies higher than 200 keV for single capture of N(2p) atoms by Li+. Furthermore, we present single ionization cross sections for both collision systems.
我们提出了一种非微扰经典处理方法，用于研究单价锂离子与氦原子和氮原子靶碰撞中的电荷转移和电离过程。采用三体经典轨迹蒙特卡罗（CTMC）方法计算了单电子俘获和单电离的总截面，其中碰撞粒子间的相互作用由盖莫型模型势描述。截面在20 keV至100 MeV的碰撞能量范围内进行了评估。特别地，我们发现对于Li+与He(1s)的单电子俘获，计算结果与现有实验数据高度吻合。此外，对于Li+与N(2p)的单电子俘获，在高于200 keV的碰撞能量下，我们的CTMC结果与实验数据合理一致。同时，我们还给出了两个碰撞系统的单电离截面。