Excitation and charge transfer in He++H collisions |
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Authors: | L F Errea L Méndez A Riera |
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Institution: | 1. Departamento de Química, C-XIV, Universidad Autónoma de Madrid, Canto Blanco, E-28049, Madrid, Spain
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Abstract: | For the conflictive case of He++H collisions, we present a norm-method optimization of the parameters included in the (often used) two-electron translation factor of Errea et al. As surmised in a previous publication, a strong cut-off is needed at short internuclear distances to prevent the translation factor from marring the properities of the molecular expansion there. With a basis of 16 molecular states, we present the first calculations including translation factors, of total and partial charge exchange and excitation cross sections in He++H collisions, as well as the alignment parameter A20 for hydrogen excitation. Good agreement with experiment is reached up to the energy range where ionization and charge exchange cross sections are comparable. |
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