Dissociative recombination, and vibrational excitation of CO$^{+}$: model calculations and comparison with experiment
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arXiv
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| Main Authors: | , , , , , , , , , , , , , |
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| Format: | Preprint |
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2024
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| _version_ | 1866910442197090304 |
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| author | 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. Schneider, I. F. |
| author_facet | 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. Schneider, I. F. |
| contents | 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. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2405_06427 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Dissociative recombination, and vibrational excitation of CO$^{+}$: model calculations and comparison with experiment 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. Schneider, I. F. Atomic Physics Instrumentation and Methods for Astrophysics Atmospheric and Oceanic Physics 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. |
| title | Dissociative recombination, and vibrational excitation of CO$^{+}$: model calculations and comparison with experiment |
| topic | Atomic Physics Instrumentation and Methods for Astrophysics Atmospheric and Oceanic Physics |
| url | https://arxiv.org/abs/2405.06427 |