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中文摘要：
基于低能离子与原子碰撞的分子库仑过垒模型，简要描述了与入射离子速度相关的反应窗理论,根据这一理论，计算了不同碰撞速度时O^8＋ ＋H，Ar^8＋ -H，Ar^8＋ -He，Ne^10＋ -He及Ar^18＋ -He等碰撞体系单电子俘获过程的微分截面，还计算了碰撞速度为0．53a．u．时^15N^7-Ne碰撞体系单电子、双电子及三电子俘获过程的微分截面，并与他人的实验结果作了比较,研究发现，反应窗理论预言的末态电子分布与实验结果符合较好．理论和实验研究表明，随着碰撞速度的增加反应窗变宽；反应窗理论所预言的微分截面，当Q值较小时比实验结果偏大，当Q值较大时比实验结果偏小．
英文摘要：
Based on the molecular Coulombic over barrier model for description of slow ion-atom collisions, the reaction window theory related to projectile velocity is presented briefly. According to the theory, the state-selective differential cross sections of single electron capture in O^8＋ ＋H,Ar^8＋ -H,Ar^8＋ -He,Ne^10＋ -He and Ar^18＋ -He collisions at different collision velocities are calculated and compared with experimental results. Calculations are also done for single, double, and triple electron capture in ^15 N^7＋ -Ne collisions at fixed velocity of 0.53 a.u. , and are compared with experimental data. It is found that the predictions of the final electronic state distribution of captured electron（s） are in agreement with experimental data, and both theory and experiments show that the widths of the reaction window increase with the projectile velocity. The differential cross sections predicted by the theory are larger for smaller Q-values, vice versa, when compared with experimental data.
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