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- W4205743407 abstract "Time-resolved carbon dioxide and nitrogen vibrational populations and translational-rotational temperature are measured in a carbon dioxide-nitrogen plasma sustained by a ns pulse discharge burst in plane-to-plane geometry. Time-resolved, absolute number density of carbon monoxide generated in the plasma is also inferred from the experimental data. Carbon dioxide and carbon monoxide vibrational populations are measured by mid-IR, tunable Quantum Cascade Laser Absorption Spectroscopy, and nitrogen vibrational populations are measured by the ns broadband vibrational CARS. Transient excitation of nitrogen and carbon dioxide asymmetric stretch vibrational energy modes is detected during the discharge burst. The time-resolved rate of carbon monoxide generation does not correlate with nitrogen or carbon dioxide asymmetric stretch vibrational temperatures, suggesting that carbon dioxide dissociation via the vibrational excitation is insignificant at the present conditions. The rate of carbon monoxide generation decreases during the discharge burst. The estimated specific energy cost of the carbon monoxide product is close to that of N atoms in pure nitrogen, measured at similar operated conditions. The effective cost, based on the input energy fraction going to carbon dioxide, is approximately 6.5 eV, close to the threshold of carbon dioxide electron impact dissociation cross section. This suggests that carbon dioxide dissociation by electron impact may be the dominant channel of carbon monoxide generation at the present conditions." @default.
- W4205743407 created "2022-01-26" @default.
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- W4205743407 date "2022-01-03" @default.
- W4205743407 modified "2023-09-28" @default.
- W4205743407 title "Time-Resolved CO2, CO, and N2Vibrational Population Measurements In Ns Pulse and Hybrid ns-RF Discharge Plasmas" @default.
- W4205743407 doi "https://doi.org/10.2514/6.2022-2366" @default.
- W4205743407 hasPublicationYear "2022" @default.
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