Abstract
The electron beam fluorescence technique was applied to nitrogen for the purpose of measuring the velocity distribution function in a nonequilibrium free jet expansion of a molecular species. This was accomplished by measuring the Doppler broadening of a single rotational line in the N+2 first negative band with a Fabry–Perot interferometer. It was found that the rotational lines of this band have an inherent line width equivalent to about 70 °K translational temperature. Because of the magnitude of this additional broadening, accurate determination of the translational temperature was not possible at the low temperatures in the free jet. A correction for the additional broadening is proposed which allows application of the technique to flows at higher temperature.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
