Investigation of relaxation phenomena in shock-heated gas and supersonic flow by single-shot CARS

Pavel V. Kozlov

doi:10.1117/12.239784

10 May 1996 Investigation of relaxation phenomena in shock-heated gas and supersonic flow by single-shot CARS

Pavel V. Kozlov

Proceedings Volume 2797, Nonlinear Spectroscopy and Ultrafast Phenomena; (1996) https://doi.org/10.1117/12.239784
Event: International Conference on Coherent and Nonlinear Optics, 1995, St. Petersburg, Russian Federation

Abstract

The vibrational kinetics of nitrogen in a shock wave was studied with use of broadband CARS. We compared the results of our own calibration tests of time relaxation of pure nitrogen with those obtained by other authors. The conclusion was made that this method (CARS) is adequate in studying of relaxation phenomena of the molecules in shock waves. The rates of a VV' exchange in mixtures N₂-O₂ was measured. We estimate the lower bound for the time of de-excitation of energy exchange between molecules and atoms of nitrogen.

Citation Download Citation

Pavel V. Kozlov "Investigation of relaxation phenomena in shock-heated gas and supersonic flow by single-shot CARS", Proc. SPIE 2797, Nonlinear Spectroscopy and Ultrafast Phenomena, (10 May 1996); https://doi.org/10.1117/12.239784

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