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• W4366450265 endingPage "054004" @default.
• W4366450265 startingPage "054004" @default.
• W4366450265 abstract "This work explores the effect of N2 addition on CO2 dissociation and on the vibrational kinetics of CO2 and CO under various non-equilibrium plasma conditions. A self-consistent kinetic model, previously validated for pure CO2 and CO2-O2 discharges, is further extended by adding the kinetics of N2. The vibrational kinetics considered include levels up to v = 10 for CO, v = 59 for N2 and up to v1 = 2 and v2 = v3 = 5, respectively for the symmetric stretch, bending and asymmetric stretch modes of CO2, and account for electron-impact excitation and de-excitation (e-V), vibration-to-translation (V-T) and vibration-to-vibration energy exchange (V-V) processes. The kinetic scheme is validated by comparing the model predictions with recent experimental data measured in a DC glow discharge operating in pure CO2 and in CO2-N2 mixtures, at pressures in the range 0.6 - 4 Torr (80.00 - 533.33 Pa) and a current of 50 mA. The experimental results show a higher vibrational temperature of the different modes of CO2 and CO and an increased dissociation fraction of CO2, that can reach values as high as 70%, when N2 is added to the plasma. On the one hand, the simulations suggest that the former effect is the result of the CO2-N2 and CO-N2 V-V transfers and the reduction of quenching due to the decrease of atomic oxygen concentration; on the other hand, the dilution of CO2 and dissociation products, CO and O2, reduces the importance of back reactions and contributes to the higher CO2 dissociation fraction with increased N2 content in the mixture, while the N2(B3Pg) electronically excited state further enhances the CO2 dissociation." @default.
• W4366450265 created "2023-04-22" @default.
• W4366450265 creator A5016025508 @default.
• W4366450265 creator A5036148724 @default.
• W4366450265 creator A5050777332 @default.
• W4366450265 creator A5050849231 @default.
• W4366450265 creator A5057651681 @default.
• W4366450265 creator A5073197120 @default.
• W4366450265 date "2023-05-01" @default.
• W4366450265 modified "2023-10-18" @default.
• W4366450265 title "Validation of non-equilibrium kinetics in CO₂-N₂ plasmas" @default.
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