Jahn, Robert G. (1962) Microwave Probing of Ionized-Gas Flows. Physics of Fluids, 5 (6). pp. 678-686. ISSN 0031-9171 http://resolver.caltech.edu/CaltechAUTHORS:JAHpof62
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The measurement of free-electron densities and collision frequencies in ionized-gas flows by a probing transverse microwave beam is described. Interpretation of the observed reflection and transmission coefficients and their phases is developed on the basis of an idealized plane wave-plane slab model, for which typical results are displayed. Application of the device and technique to a specific experiment—the buildup of ionization behind a strong shock in argon—is outlined. Effects of various departures of the microwave radiation patterns and flow configurations from the slab assumptions are discussed and examples evaluated.
|Additional Information:||© 1962 The American Institute of Physics. Received January 29, 1962. The author is greatly indebted to Dr. G. Fonda-Bonardi for his recommendation on the design of the microwave horns and the associated circuitry, and for several helpful suggestions on the conduct of the experiments. K. Harwell performed much of the technical operation and assisted considerably in the data reduction. This work was supported in part by the U.S. Air Force Office of Scientific Research.|
|Group:||Guggenheim Jet Propulsion Center|
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|Deposited By:||Archive Administrator|
|Deposited On:||25 Dec 2008 00:13|
|Last Modified:||26 Dec 2012 10:40|
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