TEMPERATURE-DEPENDENCE OF THE ROTATIONAL RELAXATION-TIME IN NITROGEN

An electron-beam fluorescence method has been used to study the temper ature dependence of the rotational relaxation time characterizing the R-T energy transfer resulting from the free jet expansion of nitrogen for temperatures in the range 6-320 K. Theoretical values calculated i n a semiclassical approximation are in good agreement with the present experimental data. The parameters of the anisotropic part of both the repulsive and attractive parts of the interaction potential have been determined earlier through a fitting procedure using the results of o ther experiments.