Electron Temperature and Density Profiles of Excimer Laser-Induced Plasmas

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Abstract:

Results are presented of a study of the plasma induced by the irradiation of a steel target by an excimer laser (308 nm, 28 ns, 40 mJ/pulse). Plasmas were formed in atmospheres of air, argon, nitrogen, and helium, at pressures from 0.5 Torr to 760 Torr. The maximum spectral intensity and line-to-background ratio occur in an atmosphere of argon at a pressure of 50 Torr. Spectroscopic techniques were used to measure time-integrated electron temperature and density profiles of the plasmas.

Keywords: Atomic emission; Electron density; Electron temperature; Laser-induced plasma

Document Type: Research Article

DOI: http://dx.doi.org/10.1366/000370290789619469

Affiliations: 1: Centre for Industrial Laser Applications, School of Physics, University of New South Wales, Kensington, NSW 2031, Australia; present address: Electronics Research Laboratory, Defence Science and Technology Organisation, P.O. Box 1600, Salisbury SA 5108, Australia 2: Centre for Industrial Laser Applications, School of Physics, University of New South Wales, Kensington, NSW 2031, Australia

Publication date: September 1, 1990

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