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Resonant ion-pair formation in electron recombination with HF+
Stockholm University, Faculty of Science, Department of Physics.
Stockholm University, Faculty of Science, Department of Physics.
2009 (English)In: Physical Review A. Atomic, Molecular, and Optical Physics, ISSN 1050-2947, E-ISSN 1094-1622, Vol. 79, no 6, 62510- p.Article in journal (Refereed) Published
Abstract [en]

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 Schroumldinger equation with multiple coupled states using a wave-packet method. A diabatization procedure is proposed to obtain the electronic couplings between quasidiabatic potentials of (1)Sigma(+) symmetry for HF. By including these couplings between the neutral states, the cross section for ion-pair formation increases with about 2 orders of magnitude compared to 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.

Place, publisher, year, edition, pages
2009. Vol. 79, no 6, 62510- p.
Keyword [en]
ab initio calculations, configuration interactions, deuterium compounds, hydrogen compounds, ion recombination, isotope effects, molecule-electron collisions, plasma collision processes, positive ions, resonant states, Schrodinger equation
National Category
Physical Sciences
Identifiers
URN: urn:nbn:se:su:diva-59957DOI: 10.1103/PhysRevA.79.062510ISI: 000267700100073OAI: oai:DiVA.org:su-59957DiVA: diva2:432561
Note
authorCount :3Available from: 2011-08-04 Created: 2011-08-02 Last updated: 2017-12-08Bibliographically approved

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