Registration methods of radiation characteristics of shock-heated gases

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Abstract

The analysis of the main methods for recording the radiation characteristics of high-temperature gases behind the front of a strong shock wave, including the 3D-spectroscopy method and the time-integrated spectroscopy method, is carried out. A more realistic approach to processing experimental data is proposed, which presents the obtained information in the form of spectrograms of the thermal flux power of shock-heated gas. Spectrograms of the thermal flux power of shock-heated air measured by the time-integrated spectroscopy method in the shock wave velocity range from 8 to 11 km/s at an initial pressure of 0.25 Torr are analyzed. Their comparison with the corresponding spectrograms obtained by the 3D-spectroscopy method showed that both methods give approximately the same results.

About the authors

G. Y. Gerasimov

Institute of Mechanics, Lomonosov Moscow State University

Moscow, Russia

P. V. Kozlov

Institute of Mechanics, Lomonosov Moscow State University

Moscow, Russia

V. Y. Levashov

Institute of Mechanics, Lomonosov Moscow State University

Email: levashovvy@imec.msu.ru
Moscow, Russia

N. G. Bykova

Institute of Mechanics, Lomonosov Moscow State University

Moscow, Russia

I. E. Zabelinsky

Institute of Mechanics, Lomonosov Moscow State University

Moscow, Russia

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