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Article Dans Une Revue Plasma Sources Science and Technology Année : 2023

Modeling of the $\mathrm{N}_2^+$ ion in cold helium plasma II: transport properties of $\mathrm{N}_2^+$ in helium

Résumé

A detailed modeling of N$_2^+$ transport properties in helium gas has been performed by employing Monte Carlo calculations based on ab initio collision cross-sections reported by our group in a preceding paper (S Paláček et al 2022 Plasma Sources Sci. Technol. 31 105004). A broad range of the reduced electric field ($E/N$) is considered to provide data directly usable in macroscopic modeling of processes in cold helium plasmas. The N$_2^+$ mobility in helium gas at room temperature (T = 300 K), the characteristic energies of its longitudinal and transversal diffusion, and the rate constant of the N$_2^+$ dissociation induced by collisions with helium atoms have been calculated. The effect of the N$_2^+$ initial rotational-vibrational excitation is investigated as well as the effect of the rotational alignment of the N$_2^+$ molecule. A direct comparison with N$_2^+$/He mobility experimental data is performed as well as indirect tests of theoretical estimates of the characteristic diffusion energies by comparing the latter with pseudo-experimental data obtained from mobility experiments via an inverse-method approach
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Dates et versions

hal-03998558 , version 1 (27-11-2023)

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Stanilas Paláček, Martin Beseda, René Kalus, Malika Benhenni, Florent X. Gadéa, et al.. Modeling of the $\mathrm{N}_2^+$ ion in cold helium plasma II: transport properties of $\mathrm{N}_2^+$ in helium. Plasma Sources Science and Technology, 2023, 32 (1), pp.015007. ⟨10.1088/1361-6595/acb1d2⟩. ⟨hal-03998558⟩
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