Abstract
The supersonic free jet of the gas mixture of different weight atoms results in a velocity slip and a temperature difference between the gas species. We obtain the rotational temperature distribution of a supersonic free jet of N_2/He gas mixture by electron beam fluorescence method. The acceleration of N_2 and the rotational temperature jump in front of the vertical plate were observed and it turned out that the temperature jump goes up with the increase in the mixture ratio of He.
