Measurement Of The Distribution Of Ionization States In An Argon Plasma

T. R. Fisher; P. C. Filbert; D. Kohler; J. D. Perez; R. Walton; G. Dahlbacka

doi:10.1117/12.965016

4 February 1988 Measurement Of The Distribution Of Ionization States In An Argon Plasma

T. R. Fisher, P. C. Filbert, D. Kohler, J. D. Perez, R. Walton, G. Dahlbacka

Proceedings Volume 0831, X-Rays from Laser Plasmas; (1988) https://doi.org/10.1117/12.965016
Event: 31st Annual Technical Symposium on Optical and Optoelectronic Applied Sciences and Engineering, 1987, San Diego, CA, United States

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.

Citation Download Citation

T. R. Fisher, P. C. Filbert, D. Kohler, J. D. Perez, R. Walton, and G. Dahlbacka "Measurement Of The Distribution Of Ionization States In An Argon Plasma", Proc. SPIE 0831, X-Rays from Laser Plasmas, (4 February 1988); https://doi.org/10.1117/12.965016

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