Abstract
The electron-beam fluorescence technique is used to probe a Mach-26 normal shock wave. A method to determine the distribution of population among the rotational states is developed. The measured number density and rotational temperature profiles are compared with the theoretical results of Brau and Simons. A simple approximate collision model is developed, producing from the experimental results, general information about the rotational equilibration process, and the determination of a rotational excitation cross section.
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