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TEMPERATURE MEASUREMENTS FOR POWDERED SOLIDS IN REFLECTED SHOCK WAVES.
HARVARD COLL OBSERVATORY CAMBRIDGE MASS
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Measurements have been made to determinne the temperature behind reflected shock waves from an aerodynamic shock in argon containing a sample of powdered material. Time-resolved temperatures were measured photoelectrically by the brightness-emissivity method which employs a short duration flash tube. The measured temperatures were consistent, and about 10 lower than the calculated temperature for pure argon, over a 9 eV range of atomic excitation energies, indicating that thermodynamic equilibrium has been achieved. Calculated and measured densities for the atoms of the powder indicate that approximately 40 of the sample was uniformly distributed behind the reflected shock wave. Author
APPROVED FOR PUBLIC RELEASE