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首页> 外文期刊>Physical Review, A. Atomic, molecular, and optical physics >Electron-impact vibrational excitation of vibrationally excited H_2 molecules involving the resonant ~2∑_g~+ Rydberg-excited electronic state
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Electron-impact vibrational excitation of vibrationally excited H_2 molecules involving the resonant ~2∑_g~+ Rydberg-excited electronic state

机译：振动的H_2分子的电子碰撞振动激发，涉及共振〜2∑_g〜+ Rydberg激发的电子态

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摘要

Electron-impact theoretical cross sections and rate coefficients for vibrational excitation of vibrationally excited H_2 molecules, occurring through the H_2~- resonant species in the 2∑_g~+ Rydberg-excited electronic state, are presented. The cross sections are calculated as functions of the incident electron energy by adopting the local-complex-potential model for resonant collisions and by using ab initio calculated molecular potentials and resonance widths. The calculations have been extended to all possible vibrational transitions linking all 15 vibrational levels of the electronic ground state of the H_2 molecule. The corresponding rate coefficients are also obtained as a function of the electron temperature by assuming a Maxwellian electron energy distribution function, and a simple analytical expression is derived. Finally, the present rate coefficients for the transitions starting from the lowest vibrational level of the H_2 molecule are compared with those for the process involving the X~2∑_u~+ resonant state of the H_2~? molecular ion.
机译：给出了在2∑_g〜+ Rydberg激发的电子态中通过H_2〜-共振物质发生的振动激发的H_2分子的振动激发的电子碰撞理论截面和速率系数。通过采用共振共振的局部复合势模型并使用从头算出的分子势和共振宽度，计算截面作为入射电子能量的函数。该计算已扩展到所有可能的振动跃迁，这些跃迁将H_2分子电子基态的所有15个振动能级联系起来。通过假定麦克斯韦电子能量分布函数，还获得了相应的速率系数作为电子温度的函数，并得出了简单的分析表达式。最后，将当前从H_2分子的最低振动水平开始的跃迁的速率系数与涉及H_2〜？的X〜2∑_u〜+共振态的过程的速率系数进行比较。分子离子。

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