P. V. Kozlov, I. E. Zabelinskii, N. G. Bykova, G. Ya. Gerasimov, V. Yu. Levashov
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Spectroscopic Measurement of Electron Concentration in Shock-Heated Gas
Results of spectroscopic measurements of the equilibrium electron concentration behind a strong shock wave in argon at a shock-wave velocity of 4.2 km/s and a pressure ahead of the wave front of 5 Torr and in O2, N2, and air in the velocity range from 8.3 to 11.3 km/s at an initial pressure of 0.25 Torr are presented. The measurement method was based on an analysis of broadening of the hydrogen-atom Hβ line of the Balmer series in the spectrum of the integral radiation density of the studied gas to which a small amount of H2 was added (~1%). The dependence of the electron concentration on the shock-wave velocity in O2, N2, and air was established. The results were compared with available experimental and calculated data.
期刊介绍：
Journal of Applied Spectroscopy reports on many key applications of spectroscopy in chemistry, physics, metallurgy, and biology. An increasing number of papers focus on the theory of lasers, as well as the tremendous potential for the practical applications of lasers in numerous fields and industries.
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