Abstract
Experimental measurements recording spark-generated shock propagation characteristics within an argon glow discharge and in the afterglow region are reported here. Photoacoustic dee ection is used to measure average shock speeds and to examine the shock wave recovery downstream of the glow discharge. Radial shock proe les at several axial locations are experimentally determined by measuring the arrival time at different radial locations. These measurements are found to be in qualitative agreement with predictions from numerical simulations that considertemperaturegradients andviscouseffects,but which do not account forany effectsoftheplasma on shock propagation.
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