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Phys. Rev. A 65, 010701 (2001) [4 pages]

Limit of the vibrational sudden approximation for H++H2 collisions

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L. F. Errea, A. Macías *, L. Méndez †, I. Rabadán, and A. Riera
Departamento de Química, Laboratorio Asociado al CIEMAT de Física Atómica y Molecular en Plasmas de Fusión, Universidad Autónoma de Madrid, 28049 Madrid, Spain

Rapid Communication Received 5 July 2001; published 5 December 2001

Vibronic close-coupling calculations of charge transfer and H2 vibrational excitation total cross sections in H++H2(1Σg+,ν=0) collisions are presented and compared with experimental data in the energy range 50 eV<E<2 keV. It is shown that the sudden approximation for vibration is inappropriate for this system at low velocities, where the dominant mechanism involves transitions between quasidegenerate vibronic levels.


©2001 The American Physical Society

URL: http://link.aps.org/abstract/PRA/v65/e010701
DOI: 10.1103/PhysRevA.65.010701
PACS: 34.70.+e, 34.10.+x

* Also at Instituto de Estructura de la Materia CSIC, Serrano 113 bis, 28006 Madrid, Spain.
† Electronic address: L.Mendez@uam.es

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