The study of electronic kinetics of molecular nitrogen in the Titan’s middle atmosphere during the precipitation of cosmic rays

A. S. Kirillov; Кириллов А. С.; R. Werner; Вернер Р.; V. Guineva; Гинева В.

doi:10.31857/S0367676523701910

The study of electronic kinetics of molecular nitrogen in the Titan’s middle atmosphere during the precipitation of cosmic rays

Authors: Kirillov A.S.¹, Werner R.², Guineva V.²
Affiliations:
1. Polar Geophysical Institute
2. Space Research and Technology Institute of the Bulgarian Academy of Sciences
Issue: Vol 87, No 7 (2023)
Pages: 1056-1064
Section: Articles
URL: https://ruspoj.com/0367-6765/article/view/654369
DOI: https://doi.org/10.31857/S0367676523701910
EDN: https://elibrary.ru/OTGIRI
ID: 654369

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Abstract

The kinetics of the $A^{3} Σ_{u}^{+},$ B³Π_g, W³Δ_u, $B^{' 3} Σ_{u}^{-},$ and C³Π_u triplet states of molecular nitrogen at the heights of the middle atmosphere of Titan during action of cosmic rays into the atmosphere has been studied. The calculations consider the intramolecular and intermolecular electron energy transfer during inelastic collisions of electronically excited molecular nitrogen with N₂, CH₄, and CO molecules. The interaction of electronically excited N₂ molecules with molecules of acetylene C₂H₂ and ethylene C₂H₄ in the middle atmosphere of Titan at altitudes of 50–250 km has been studied. For the first time, the dominance of reactions with metastable molecular nitrogen N₂( $A^{3} Σ_{u}^{+}$ ) in the formation of C₂H and C₂H₃ radicals at these heights has been shown.

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