Experimental Study on the Ionization of Argon Gas in a Non-Equilibrium State Behind Reflected Shock Waves,
YOKOHAMA NATIONAL UNIV (JAPAN) DEPT OF MECHANICAL ENGINEERING
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The electron temperature, the density and the ion temperature in argon gas behind reflected shock waves were measured by a laser light scattering method, while the gas temperature was measured by the spectroscopic method. The values of these three temperatures are different from each other during a certain period after arrival of the reflected shock front. Both the electron and ion temperatures are much higher than the theoretical gasdynamic temperature. The ionization rate is also much higher than that in the equilibrium state, but the measured gas temperature is lower than the theoretical one. These results suggest that the argon gas is in a non-equilibrium state during the first period.