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arXiv 0903.4794physics.atom-phphysics.class-ph
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电子与HF ^+复合中共振离子对的形成

Resonant ion-pair formation in electron recombination with HF^+

J. B. Roos, A. E. Orel, AA. Larson

摘要:

通过求解含时多态耦合薛定谔方程,采用波包方法计算了低能电子与HF^+碰撞中共振离子对形成的截面.提出了一种非绝热化方法来获得HF的^1 σ ^+对称性准非绝热势之间的电子耦合。通过包括中性态之间的这些耦合,与直接解离的截面相比,离子对形成的截面增加了大约两个数量级。与实测截面的定性一致。分析了计算截面中的振荡现象。计算了电子与DF^+复合形成离子对的截面,以确定同位素替代的影响。

英文摘要:

The cross section for resonant ion-pair formation in the collision of low-energy electrons with HF^+ is calculated by the solution of the time-dependent Schrodinger equation with multiple coupled states using a wave packet method. A diabatization procedure is proposed to obtain the electronic couplings between quasidiabatic potentials of ^1Sigma^+ symmetry for HF. By including these couplings between the neutral states, the cross section for ion-pair formation increases with about two orders of magnitude compared with the cross section for direct dissociation. Qualitative agreement with the measured cross section is obtained. The oscillations in the calculated cross section are analyzed. The cross section for ion-pair formation in electron recombination with DF^+ is calculated to determine the effect of isotopic substitution.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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