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Photoexcitation and photoionization of argon ahead of a strong shock wave

Dobbins, Richard A. (1968) Photoexcitation and photoionization of argon ahead of a strong shock wave. AIAA Papers, AIAA 68-666. AIAA , Reston, VA. http://resolver.caltech.edu/CaltechAUTHORS:20101223-071151029

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Abstract

A chemical kinetic model describing photochemical reactions that are likely to be important in "cold" argon ahead of a strong shock wave is examined on a quantitative basis. The model includes the propagation of resonance radiation far from the shock front in the wings of the resonance absorption line, partial trapping of the absorbed resonance radiation, subsequent photoionization of excited atoms, photoionization of ground state argon, and certain recombination and deexcitation processes. Specific consideration is given to shock tube geometry, the occurrence of both nonequilibrium and equilibrium regions of variable lengths behind the pressure discontinuity, and the (experimentally) known shock tube wall reflectivity. Theoretical predictions of electron and excited atom concentrations ahead of the shock wave are presented for typical shock tube operating conditions.


Item Type:Report or Paper (Report)
Additional Information:© 1968, American Institute of Aeronautics and Astronautics. Work supported by the Air Force Office of Scientific Research (OAR) under Contract AF49(638)-1285. The author is deeply indebted to Dr. Dieter Schlüter for the information generously conveyed on photoionization cross sections prior to its publication. The advice and encouragement of the staff of the Guggenheim Jet Propulsion Center, with whom the author was privileged to spend his sabbatical leave, is also acknowledged.
Group:Guggenheim Jet Propulsion Center
Funders:
Funding AgencyGrant Number
Air Force Office of Scientific ResearchAF 49 (638)-1285
Other Numbering System:
Other Numbering System NameOther Numbering System ID
Guggenheim Jet Propulsion CenterUNSPECIFIED
AIAA68-666
Record Number:CaltechAUTHORS:20101223-071151029
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20101223-071151029
Official Citation:Photoexcitation and photoionization of argon ahead of a strong shockwave. DOBBINS, R. A., CALIFORNIA INST. OF TECH., GUGGENHEIM JET PROPULSIONCENTER, PASADENA, CALIF. AIAA-1968-666 AMERICAN INST OF AERONAUTICS AND ASTRONAUTICS, FLUID AND PLASMA DYNAMICS CONFERENCE, LOS ANGELES, CALIF., Jun 24-26, 1968.
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:21508
Collection:CaltechAUTHORS
Deposited By: Ruth Sustaita
Deposited On:12 Jan 2011 19:16
Last Modified:26 Dec 2012 12:47

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