Adiabatic channel study of the capture of nitrogen and oxygen molecules by an ion: effect of nuclear symmetry and spin-spin interaction |
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| Authors: | A I Maergoiz E E Nikitin J Troe |
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| Institution: | 1. Institut für Physikalische Chemie, Universit?t G?ttingen, Tammannstrasse 6, D-37077, G?ttingen, Germany
2. Department of Chemistry, Technion-Israel Institute of Technology, 32000, Haifa, Israel
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| Abstract: | Within the adiabatic channel treatment of ionmolecule capture we have calculated the low temperature capture rate constants of N2(1Σ g + ) and O2(3Σ g ? )in collisions with positive and negative ions. In both cases, the charge-quadrupole and the anisotropic charge-induced dipole interactions produce noticeable deviations from the Langevin rate constant. The rate constants calculated with account for the anisotropic interaction, in addition, are substantially affected by nuclear symmetry; in the case of O2(3Σ g ? ), the fine-structure spin-spin interaction strongly manifests itself in the rate constants. |
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