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V. A. Korolenko, A. I. Zagoskin, K. V. Kozlov, T. A. Nikitina, G. S. Fedoseev, V. G. Samoilovich

Plasma diagnostics of the barrier discharge plasma torch in argon flow in a capillary by cross-correlation spectroscopy


Radiation kinetics of the barrier discharge plasma torch was studied by means of the technique of cross-correlation spectroscopy. The emission spectrum was found to consist of the lines of the excited states of argon, and of the bands of the hydroxyl radical and of the bands of the 2nd positive system of molecular nitrogen. The analysis of the spatio-temporal distributions of the radiation intensities of the selected spectral indicators has shown the following. The torch emerges due to the ionizing waves that propagate inside the capillary from the electrode system at a velocity of about 105 m/s and come outside to a distance of 34 mm. The dominant channel of the formation of the excited molecular nitrogen N2(C3Pu) was found to be the reaction between the molecules of nitrogen in the ground state and the atoms of argon in the excited states.
Moscow University Chemistry Bulletin.
2012, Vol. 53, No. 1, P. 3

Copyright (C) Chemistry Dept., Moscow State University, 2002
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