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Proceedings Paper

Measurement Of The Distribution Of Ionization States In An Argon Plasma
Author(s): T. R. Fisher; P. C. Filbert; D. Kohler; J. D. Perez; R. Walton; G. Dahlbacka
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Paper Abstract

An experiment to measure the distribution of ionization states in an argon plasma proliaced by irradiating a gas-jet with 351-nm radiation from the OMEGA laser is described. The gas-jet was provided by Plasma Research Corporation. Its low divergence makes it possible to create a disk-shaped plasma region 1.5 mm diam x 1.5 mm thick over which the temperature and density are slowly varying. The experiment was performed at the Laboratory for Laser Energetics, University of Rochester, as part of the Department of energy's National Laser Users Facility Program. Eight beams of 60 J each were used to teat the argon gas-jet plasma. In the present experiment, a plasma temperature of about 65 eV was achieved at an electron density of about 1.0 x 1018. Lines in argon charge states VIII-XI have been ileatified in the spectra, and the results are compared with theoretical models which ,directly solve the time-dependent charge-state rate equations. It was found necessary to preionize the argon in order to couple in sufficient energy from the laser to produce a plasmasma.

Paper Details

Date Published: 4 February 1988
PDF: 9 pages
Proc. SPIE 0831, X-Rays from Laser Plasmas, (4 February 1988); doi: 10.1117/12.965016
Show Author Affiliations
T. R. Fisher, Lockheed Missiles & Space Company, Inc. (United States)
P. C. Filbert, Lockheed Missiles & Space Company, Inc. (United States)
D. Kohler, Lockheed Missiles & Space Company, Inc. (United States)
J. D. Perez, Lockheed Missiles & Space Company, Inc. (United States)
R. Walton, Lockheed Missiles & Space Company, Inc. (United States)
G. Dahlbacka, Plasma Rsearrh Corporation (United States)


Published in SPIE Proceedings Vol. 0831:
X-Rays from Laser Plasmas
Martin C. Richardson, Editor(s)

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