This paper reviews the electron- and heavy-particle impact processes governing the population/depletion of the states of N, O, , and , which can be significantly affected by nonequilibrium conditions while strongly radiating in lunar-return shock layers. The collisional-radiative model developed in this work includes electron-impact excitation, ionization, heavy-particle impact excitation, vibration–electron, vibration–translation, dissociation and bound–bound radiative mechanisms. The available experimental and theoretical reaction rates governing these processes were critically reviewed to produce a reliable set of rate constants. The collisional-radiative model was then applied to typical nonequilibrium thermodynamic conditions encountered during lunar-return Earth reentry. The effect of heavy-particle impact processes is discussed.
Air Collisional-Radiative Modeling with Heavy-Particle Impact Excitation Processes
Journal of Thermophysics and Heat Transfer ; 30 , 1 ; 226-239
2015-02-26
14 pages
Article (Journal)
Electronic Resource
English
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