Further results on the over-all density ratios of shock waves in carbon dioxide

Abstract

Previous results on the over-all density ratio of shock waves in CO 2 , confirming experimentally the theoretical equilibrium value, have been extended to a shock Mach number of 7·3. The discrepancy between our results and earlier Princeton results approaches 18% at a Mach number of 7. Possible reasons for this are discussed, with particular reference to the interferometer technique, but no explanation has been found.