期刊论文

Li, XX;Zhang, S

中文

物理学报

1000-3290

2022

71

3

199-206

10.7498/aps.71.20211470

国家自然科学基金项目（批准号：11775108）资助的课题；

本校为第一且通讯机构

经典轨迹蒙特卡罗（CTMC）方法是研究离子-原子碰撞系统电荷交换过程的常用方法,广泛应用于天体物理以及实验室等离子体环境下=重粒子碰撞过程的研究.本文利用四体碰撞模型（4-CTMC）研究了包括两个束缚电子的四体碰撞过程,通过数值求解四体碰撞系统的哈密顿运动方程,计算了高电荷态入射离子(Li3+,Be4+和O7+)同氦原子在大能量范围的单、双电子电离和俘获截面.H++He碰撞截面的计算中,在50—200 keV/amu的入射能区,4-CTMC的结果几乎重复了实验结果.在高电荷态入射情形下,4-CTMC计算的单电子电离和俘获截面值相较于三体碰撞模型（3-CTMC）在100—500 keV/amu的入射能区内与实验符合更好.尽管4-CTMC...

The classical trajectory Monte Carlo (CTMC) method is a common method to study the charge-transfer and impact-ionization cross sections for the collisions between ions and atoms, and the heavy particle collision in astrophysics and laboratory plasma environment. Here in this work, we use the 4-CTMC method to study a four-body collision process including two bound electrons, and the Hamiltonian equation of the four-body dynamic system is solved numerically. The single/double electron ionization and capture cross sections are calculated for collisions of high charge state ions (Li3+, Be4(+) and ...