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Recombination, ionization, and nonequilibrium electrical conductivity in seeded plasmas

Cool, Terrill A. and Zukoski, Edward E. (1966) Recombination, ionization, and nonequilibrium electrical conductivity in seeded plasmas. Physics of Fluids, 9 (4). pp. 780-796. ISSN 1070-6631. http://resolver.caltech.edu/CaltechAUTHORS:20110103-093330751

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Abstract

New data are presented which provide direct experimental confirmation of the validity of a physical model which has been widely employed to predict the electrical conductivity of dense, two-temperature, seeded plasmas. Experimental measurements of electron temperature, and ionization and recombination rates are presented for partially ionized plasmas of potassium-seeded argon. Experimental conditions were chosen to cover those ranges of interest in connection with proposed magnetohydrodynamic energy conversion devices for which nonequilibrium electrical conductivity measurements have been previously reported, e.g., translational atom temperatures of about 2000°K, total atom densities near 10^(18)/cm^3, potassium densities of about 10^(16)/cm^3, electron densities from 10^(13)/cm^3 to 10^(15)/cm^3, and electron temperatures from 2200 to 3500°K. Measured values of electron-electron-ion recombination coefficients for potassium show good agreement with theoretical values based upon the Gryzinski classical inelastic-collision cross-section expressions. Observed ionization rates and relaxation characteristics appear to be adequately explained by a similar formulation for the ionization process.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1063/1.1761745DOIUNSPECIFIED
http://pof.aip.org/resource/1/pfldas/v9/i4/p780_s1PublisherUNSPECIFIED
http://link.aip.org/link/PFLDAS/v9/i4/p780/s1 PublisherUNSPECIFIED
Additional Information:© 1966 American Institute of Physics. Received 16 September 1965. Online Publication Date: 9 December 2004. This work was supported by the Air Force Office of Scientific Research primarily under Grant No. AF-AFOSR-160-63, and partially under Contract No. AF 49(638)-1346.
Group:Guggenheim Jet Propulsion Center
Funders:
Funding AgencyGrant Number
Air Force Office of Scientific Research (AFOSR)AF-AFOSR-160-63
Air Force Office of Scientific Research (AFOSR)AF 49(638)-1346
Other Numbering System:
Other Numbering System NameOther Numbering System ID
Guggenheim Jet Propulsion CenterUNSPECIFIED
Record Number:CaltechAUTHORS:20110103-093330751
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20110103-093330751
Official Citation:Recombination, Ionization, and Nonequilibrium Electrical Conductivity in Seeded Plasmas Terrill A. Cool and Edward E. Zukoski Phys. Fluids 9, 780 (1966); doi:10.1063/1.1761745 (17 pages)
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:21527
Collection:CaltechAUTHORS
Deposited By: Ruth Sustaita
Deposited On:04 Jan 2011 18:27
Last Modified:26 Dec 2012 12:47

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