1. Dissociative recombination, and vibrational excitation of CO$^{+}$: model calculations and comparison with experiment
- Author
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Mezei, J. Zs, Backodissa-Kiminou, R. D., Tudorache, D. E., Morel, V., Chakrabarti, K., Motapon, O., Dulieu, O., Robert, J., Tchang-Brillet, W. -Ü. L., Bultel, A., Urbain, X., Tennyson, J., Hassouni, K., and Schneider, I. F.
- Subjects
Physics - Atomic Physics ,Astrophysics - Instrumentation and Methods for Astrophysics ,Physics - Atmospheric and Oceanic Physics - Abstract
The latest molecular data - potential energy curves and Rydberg$/$valence interactions - characterizing the super-excited electronic states of CO are reviewed, in order to provide inputs for the study of their fragmentation dynamics. Starting from this input, the main paths and mechanisms for CO$^+$ dissociative recombination are analyzed; its cross sections are computed using a method based on Multichannel Quantum Defect Theory. Convoluted cross sections, giving both isotropic and anisotropic Maxwellian rate-coefficients, are compared with merged-beam and storage-ring experimental results. The calculated cross sections underestimate the measured ones by a factor of $2$, but display a very similar resonant shape. These facts confirm the quality of our approach for the dynamics, and call for more accurate and more extensive molecular structure calculations., Comment: 12 pages, 8 figures 5 tables
- Published
- 2024
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