电子碰撞He(1s^2)原子电离的初态依赖与角度关联的无关性

Angular correlations' insignificance in the initial states dependence for electron-impact He(1s^2) ionization

利用DS3C模型 ,考虑了入射道靶原子He基态几种不同关联形式的波函数 ,分别计算了He(1s2 ) (e ,2e)反应的三重微分截面。结果表明 ,微分截面的角度分布与靶基态任何形式的关联无关 ,而主要取决于出射道粒子间的干涉、关联、交换和多体耦合的共同作用。

Electron impact ionization of Helium is investigated theoretically for the cases of some different relative wave functions. A calculation is proposed, which includes almost full correlation in the initial state and final state by DS3C model. The calculations are compared with the available ( e,2e) experimental data on helium 1s 2 . The results show that the correlations in the initial states are not necessary for the evaluation of the angular distributions. The triple differential cross section mainly depends on the common interactions betweent the final state particles such as interference, correlation, exchange and many body coupling.