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The effects of small quantities of hydrogen, deuterium and helium on vibrational relaxation of carbon dioxide

Published online by Cambridge University Press:  29 March 2006

T. Rees  and
J. K. Bhangu
T. Rees
Affiliation:
Department of the Mechanics of Fluids, University of Manchester Present address: Hawker Siddeley Dynamics Ltd.
J. K. Bhangu
Affiliation:
Department of the Mechanics of Fluids, University of Manchester
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Abstract

The vibrational relaxation frequency measurements were made on mixtures of carbon dioxide and the light gases using a shock tube and a Mach-Zehnder interferometer. The temperature range covered was 350–1200 °K. It was discovered that in the case of helium the effectiveness of the carbon dioxide-helium collision increases with increasing temperature while in the case of hydrogen and deuterium the collision number displays an anomalous temperature behaviour. At about 1000 °K all the three light gases are almost equally efficient in exciting the vibrational modes of carbon dioxide.

Type
Research Article
Information
Journal of Fluid Mechanics , Volume 39 , Issue 3 , 27 November 1969 , pp. 601 - 610
Copyright
© 1969 Cambridge University Press

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