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Proceedings Paper

Investigation of the laser-induced plasma produced in a gas-filled chamber and in a gas jet
Author(s): Jong-Uk Kim; Gaung-Hoon Kim; Hyyong Suk
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Paper Abstract

In the current study, characteristics of the laser-induced plasma were investigated in a gas filled chamber or in a gas jet by using a relatively low intensity laser (I ≤ 5 x 1012 W/cm2). Temporal evolutions of the produced plasma were measured using the shadow visualization and the shock wave propagation as well as the electron density profiles in the plasma channel was measured using the Mach-Zehnder interferometry. Experimental results such as the structure of the produced plasma, shock propagation speed (Vs), electron density profiles (ne), and the electron temperature (Te) are discussed in this study. Since the diagnostic laser pulse occurs over short time intervals compared to the hydrodynamic time scales of expanding plasma or a gas jet, all the transient motion occurring during the measurement is assumed to be essentially frozen. Therefore, temporally well-resolved quantitative measurements were possible in this study.

Paper Details

Date Published: 1 August 2003
PDF: 6 pages
Proc. SPIE 4948, 25th International Congress on High-Speed Photography and Photonics, (1 August 2003); doi: 10.1117/12.516989
Show Author Affiliations
Jong-Uk Kim, Korea Electrotechnology Research Institute (South Korea)
Gaung-Hoon Kim, Korea Electrotechnology Research Institute (South Korea)
Hyyong Suk, Korea Electrotechnology Research Institute (South Korea)

Published in SPIE Proceedings Vol. 4948:
25th International Congress on High-Speed Photography and Photonics
Claude Cavailler; Graham P. Haddleton; Manfred Hugenschmidt, Editor(s)

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