TEMPERATURE MEASUREMENTS IN FDL 50-MEGAWATT ELECTROGASDYNAMIC FACILITY
PLASMA SCIENCES LABS INC VAN NUYS CA
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Temperatures in the free stream of a 50 MW electrogasdynamic test facility were determined from experimentally measured radial intensity profiles of the electron continuum. Static plasma pressures were 10 and 20 atm in flowing air and measured temperatures ranged from 3800K to 5400K. A spectral probe defined by the optical path of a 14 meter grating spectrograph and focussing lens was traversed across the shock cone of the plasma before and after insertion of test samples. Calibration curves for the detector were used for relating the measured intensity to temperature. The results indicate that the nitric oxide concentration in the plasma is lower than the equilibrium value expected at these temperatures.
- Plasma Physics and Magnetohydrodynamics