Aq++H碰撞中的电荷转移

利用CTMC方法计算C^q+,N^q+,O^q+与H原子的碰撞过程的截面.入射粒子的能量范围为10~250keV/amu,离子为部分电离和完全电离的离子.给出了十二个耦合的Hamilton运动方程.用六个伪随机数确定粒子的轨道. A^q+离子和作用电子的势为模型势,其他两个势为纯库仑势。在计算中,需要2000个以上的轨道.引入约化变量σ_tr=σ_tr/q,E=E/q^1/2,得到了q标度的俘获截面,这些截面数据都集中在一条曲线附近.计算结果与其他理论计算结果作了比较,它们符合得很好.

Charge Transfer in Aq+ + H Collisions

Charge transfer cross sections in C^q+ +H, N^q+ + HO ^q+ + H collisions are calculated with the CTMC method. The energy range of incident projectile is from 10keV/amu to 250keV/amu. The ions are partially stripped o rfully. Hamilton's equations of motion are given by the 12 coupled equations. Six pseudo-random parameters are required for the determination of the trajectories. A model potential between A^q+ ion and the active electron is used. The other two interactions are pure Coulombic. In our calculation, more than 2000 trajectories are required. Introducing reduced variables, σ_tr=σ_tr/q, E=E/q^1/2, a q-scaled electron capture cross section curve is obtained, all cross section data are grouped around a single curve. Numerical results are compared with other theoretical calculations. It shows that the resuts are in reasonable agreement with other Ones.