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Nonequilibrium electrical conductivity measurements in argon and helium seeded plasmas

Zukoski, Edward E. and Cool, Terrill A. (1965) Nonequilibrium electrical conductivity measurements in argon and helium seeded plasmas. AIAA Journal, 3 (2). pp. 370-371. ISSN 0001-1452. http://resolver.caltech.edu/CaltechAUTHORS:20101223-112858217

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Abstract

In a previous paper, the authors presented experimental values of electrical conductivity measured in a plasma composed of argon gas seeded with potassium vapor. The measurements were made at atmospheric pressure with a neutral gas temperature of 2000° ± 100°K and with a number of values of seed concentration in the range 0.2 to 0.8 mole %. The effect of nonequilibrium heating of the electron gas-excited potassium system was investigated for a range of current densities between 0.8 and 80 amp/cm^2. These data were in good agreement with values of the conductivity calculated by a scheme, outlined in Ref. 1, which included the effects of energy loss from the system, composed of the electron gas and the electronically excited states of potassium due to radiation from the excited potassium atoms. In addition, the pulsed technique used to measure the conductivity in response to a step function application of the electric field made possible the determination of the relaxation times for the ionization process.


Item Type:Article
Additional Information:© 1965, by the American Institute of Aeronautics and Astronautics. Received August 24, 1964. This work was supported by the Air Force Office of Scientific Research under Grant No. AFAFOSR-160-63.
Group:Guggenheim Jet Propulsion Center
Funders:
Funding AgencyGrant Number
Air Force Office of Scientific Research (AFOSR)AFOSR-160-63
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Other Numbering System NameOther Numbering System ID
Guggenheim Jet Propulsion CenterUNSPECIFIED
Record Number:CaltechAUTHORS:20101223-112858217
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20101223-112858217
Official Citation:Nonequilibrium electrical conductivity measurements in argon and helium seeded plasmas COOL, T. A. (CALIFORNIA INST. OF TECH., DANIEL AND FLORENCE GUGGENHEIM JET PROPULSION CENTER, VON KARMAN LAB. OF FLUID MECHANICS AND JET PROPULSION, PASADENA, CALIF.);ZUKOSKI, E. E. AIAA Journal (0001-1452) 1965 vol. 3 no. 2
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:21520
Collection:CaltechAUTHORS
Deposited By: Ruth Sustaita
Deposited On:05 Jan 2011 22:22
Last Modified:26 Dec 2012 12:47

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