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Article

Plasma Investigations
2002. V. 40. № 2. P. 161–165
Smirnov S.A., Rybkin V.V., Kholodkov I.V.
Simulation of the Processes of Formation and Dissociation of Neutral Particles in Air Plasma: Vibrational Kinetics of Ground States of Molecules
Annotation
The results are given of the calculations of populations of vibrational levels of N2(X1Σ+g), O2(X3Σg), and NO(X2Π) molecules in an air plasma whose parameters correspond to the positive column of a DC discharge at pressures of 30300 Pa and currents of 20110 mA. Different processes are analyzed that form the distribution of molecules over levels, including the electron impact, VV and VT exchange, chemical reactions, and heterogeneous deactivation. The calculation results for N2(X1Σ+g) are compared with experiment. It is found that the values of the effective vibrational temperature characterizing the populations of N2(X1Σ+g) are close to the values realized in a nitrogen plasma, and the difference of the vibrational temperatures of O2(X3Σg) and NO(X2Π) from the gas temperatures is not significant, which is due to high frequencies of VT relaxation of vibrational states of these molecules in collisions with O(3P) atoms.
Article reference:
Smirnov S.A., Rybkin V.V., Kholodkov I.V. Simulation of the Processes of Formation and Dissociation of Neutral Particles in Air Plasma: Vibrational Kinetics of Ground States of Molecules, High Temp., 2002. V. 40. № 2. P. 161