质子与He^+,Li^(++)高能碰撞过程中电子俘获截面的理论计算

THEORETICAL CALCULATIONS OF CROSS SECTIONS FOR ELECTRON CAPTURE IN COLLISIONS OF PROTON WITH He + AND Li +

用ＯＢＫ近似和ＣＤＷ近似计算了Ｈ＋＋Ｈｅ＋和Ｈ＋＋Ｌｉ＋＋碰撞过程中电子俘获到激发态的分截面与俘获到基态分截面的比值，结果发现用ＯＢＫ近似给出的比值和用ＣＤＷ方法所给出的相应比值在高能区符合得很好．

We have computed the partial cross section ratios of electron capture into excited states to ground state in collisions of proton with He + and Li ++ ions using Oppenheimer Brinkman Kramers and continuum distorted wave methods. Our results show that the cross section ratios obtained by the two different methods are consistent with each other at high energies. Consequently, we propose a simple method to estimate the partial and total cross sections of electron capture by proton from any hydrogen like ions at high energies.