Journal
JOURNAL OF THERMOPHYSICS AND HEAT TRANSFER
Volume 30, Issue 1, Pages 226-239Publisher
AMER INST AERONAUTICS ASTRONAUTICS
DOI: 10.2514/1.T4549
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- Airbus Group Space Systems Operations Directorate under Astrium grant [09-919]
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This paper reviews the electron- and heavy-particle impact processes governing the population/depletion of the states of N, O, N2, 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.
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