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arxiv: physics/0602027 · v2 · submitted 2006-02-04 · ⚛️ physics.atom-ph

Renner-Teller effects in HCO+ dissociative recombination

Ivan A. Mikhaylov (1) , Viatcheslav Kokoouline (2) , Asa Larson (2) , Stefano Tonzani (3) , Chris H. Greene (3) ((1) Department of Physics , University of Central Florida , Orlando , Florida
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USA; (2) Department of of Applied Physics Royal Institute of Technology AlbaNova University Center S-106 91 Stockholm Sweden; (3)Department of Physics JILA University of Colorado Boulder Colorado USA)
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classification ⚛️ physics.atom-ph
keywords dissociativerecombinationcouplingprocessrenner-telleragreementanotherclosed-shell
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A theoretical description of the dissociative recombination process for the HCO+ ion suggests that the nonadiabatic Renner-Teller coupling between electronic and vibrational degrees of freedom plays an important role. This finding is consistent with a recent study of this process for another closed-shell molecule, the H3+ ion, where Jahn-Teller coupling was shown to generate a relatively high rate. The cross section obtained here for the dissociative recombination of HCO+exhibits encouraging agreement with a merged-beam experiment.

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