Determination of the Electron Temperature of Shock-Heated Air from the Measured Radiation Intensities

N. G. Bykova; Быкова Н. Г.; I. E. Zabelinskii; Забелинский И. Е.; P. V. Kozlov; Козлов П. В.; G. Ya. Gerasimov; Герасимов Г. Я.; V. Yu. Levashov; Левашов В. Ю.

doi:10.31857/S0207401X23040040

Determination of the Electron Temperature of Shock-Heated Air from the Measured Radiation Intensities

Authors: Bykova N.G.¹, Zabelinskii I.E.¹, Kozlov P.V.¹, Gerasimov G.Y.¹, Levashov V.Y.¹
Affiliations:
1. Institute of Mechanics, Moscow State University
Issue: Vol 42, No 4 (2023)
Pages: 64-72
Section: Combustion, explosion and shock waves
URL: https://vestnikugrasu.org/0207-401X/article/view/674880
DOI: https://doi.org/10.31857/S0207401X23040040
EDN: https://elibrary.ru/MVTAZT
ID: 674880

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Abstract
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Abstract

The results of the radiation characteristics of shock-heated air measurements in the vacuum-ultraviolet region are presented. The experiments are carried out in the STS shock tube of the Institute of Mechanics, Moscow State University at shock-wave velocities of 7.3 to 10.7 km/s and initial pressures in the low-pressure chamber of 0.125, 0.2, and 0.25 Torr. An analytical model of the radiation process is constructed, which takes into account the absorption of radiation during its passage through the air . Processing the experimental dependences of the radiation intensity on time for the main radiation lines using this model made it possible to propose a radiation method for determining the electron temperature of a shock-heated gas. The presented data are compared with the experimental data of other authors.

Keywords

shock waves, radiation, air, shock tube, electron temperature

References

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