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Proceedings Paper

Excimer-laser-produced plasma studies
Author(s): Michael C. Cates
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Paper Abstract

The interaction of an Excimer laser with an aluminum surface was studied by a characterization of the blowoff plasma plume. The SDIOIMLI Two-Meter Laser, operating at XeF and KrF wavelengths, was used to illuminate mm sized spots on aluminum targets at fluences of 400 - 1250 J/cm2 for 1 .8 ps. The resultant plasma was characterized by numerous techniques. The temperature of the plasma as a function of distance out in the plume was measured by both a modified line reversal technique and spectral methods. The absolute ion density was measured as a function of distance out in the plume by a laser absorption technique. The temperature in the blowoff plasma plume was found to be relatively constant, dropping by approximately 50% in 1 cm. The density, however, fell by an order of magnitude in the same distance. The measured results agree with predictions from the 2-D Hydrocode STREAK.

Paper Details

Date Published: 1 August 1990
PDF: 10 pages
Proc. SPIE 1279, Laser-Assisted Processing II, (1 August 1990); doi: 10.1117/12.20625
Show Author Affiliations
Michael C. Cates, Maxwell Labs., Inc. (United States)

Published in SPIE Proceedings Vol. 1279:
Laser-Assisted Processing II
Lucien Diego Laude, Editor(s)

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