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Phys. Rev. A 63, 062722 (2001) [8 pages]

Picturing the ionization process in ion-atom collisions with time-dependent quantum and classical methods

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Clara Illescas1, B. Pons1, and A. Riera2
1Centre Lasers Intenses et Applications, UMR 5107 du CNRS, Université de Bordeaux-I, 351 Cours de la Libération, F-33405 Talence, France
2Laboratorio de Física Atómica y Molecular en Plasmas de Fusión Nuclear, asociado al Laboratorio Nacional de Fusión por Confinamiento Magnético, Departamento de Química, C-IX, Universidad Autónoma de Madrid, Cantoblanco, E-28049 Madrid, Spain

Received 19 January 2001; published 16 May 2001

The classical trajectory Monte Carlo method and the monocentric close-coupling Bessel expansion scheme are implemented to describe ionizing He2++H(1s) collisions at the threshold of the high-impact-energy range. Ionization dynamics are pictured by showing the temporal evolution of both ionizing density and average velocity field. We emphasize that the classical and quantum-mechanical treatments of electronic motion yield very close descriptions of ionization.


©2001 The American Physical Society

URL: http://link.aps.org/doi/10.1103/PhysRevA.63.062722
DOI: 10.1103/PhysRevA.63.062722
PACS: 34.10.+x, 34.50.Fa

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