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Combustion, Explosion and Shock Waves

2002 year, number 4

Ionization in a Combustion Wave

O. K. Kamynina, N. I. Kidin,*V. A. Kudryashov, A. S. Rogachev, and L. M. Umarov
Institute for Structural Macrokinetics and Problems of Materials Science,
Russian Academy of Sciences, Chernogolovka 142432, kuz@ism.ac.ru.
*Institute for Problems of Mechanics, Russian Academy of Sciences, Moscow 117526
Keywords: combustion wave, gas phase, ionization, ion concentration, electron temperature.
Pages: 446-448

Abstract

The reaction mechanism and kinetics of self-propagating high-temperature synthesis in a Ti5Si3 system are experimentally studied. The Langmuir probe and optical spectroscopy are used to determine the composition and degree of ionization of the gas phase formed due to the combustion-induced degassing of impurities. The propagation of the combustion wave is shown to be accompanied by ionization of released gases, both the ion concentrations and electron temperatures being determined. Through a comparison between the data obtained and spectroscopic data, the ion species are identified.