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Vacuum ultraviolet radiation studies in a plasma torch facility from 170 - 200 nm
Conference paper   Peer reviewed

Vacuum ultraviolet radiation studies in a plasma torch facility from 170 - 200 nm

Carolyn Jacobs, U A Sheikh, M E MacDonald, C O Laux and R G Morgan
Proceedings of the 44th American Institute of Aeronautics and Astronautics Thermophysics Conference, pp.1032-1041
American Institute of Aeronautics and Astronautics (AIAA) Thermophysics Conference, 44th (San Diego, United States, 24-Jun-2013–27-Jun-2013)
Curran Associates Inc.
2013
DOI: https://doi.org/10.2514/6.2013-3015
url
https://doi.org/10.2514/6.2013-3015View
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Abstract

For many Earth atmospheric reentry conditions, the vacuum ultraviolet portion of the radiative heating can be significant. As a result, information on this region can be important to the development of thermal protection systems. Few experimental data are available in the this spectral region due to the difficulty of measuring emission in a spectral region where air strongly absorbs the radiation. The 50 kW radio-frequency inductively coupled plasma torch recently installed at the Laboratoire EM2C (Ecole Centrale Paris) has been used to conduct equilibrium emission spectroscopy measurements in the vacuum ultraviolet region for relevant Earth reentry conditions. Absolute intensity emission spectra measured in the range 170 - 200 nm are obtained and compared with the prediction of the line-by-line Specair code.

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