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Proceedings Paper

Laser-Stimulated Reactions On The Surface Of Quartz And Some Minerals
Author(s): Anel F. Mukhamedgalieva
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Paper Abstract

The influence of CO2 laser radiation (power density 103-105 W/cm2) on the surface of quartz and silica--contained minerals such as nepheline, microcline, etc. in oxidizing, neutral and reducing gaseous media has been investigated. It was found from spectroscopic and chemical analysis, that emitting of silicon-oxygen groupments mainly occured with laser radiation absorption in samples studied. This phenomenon can be explained by selective excitation of Si 0 valent vibrations in solids up to complete destruction of the bonds. The obtained results clearly explained the earlier discovered phenomenon of irreversible "burning out" (clear up) of line in IR absorbtion spectra of solids on the frequency of the laser influence by CO2 laser radiation. On the surface of melted quartz in the medium enriched by hydrogen a laser-stimulated reducing reaction that resulted in appearing of Si H bonds containing combination has been obtained.

Paper Details

Date Published: 26 October 1989
PDF: 3 pages
Proc. SPIE 1132, High Power Lasers and Laser Machining Technology, (26 October 1989); doi: 10.1117/12.961588
Show Author Affiliations
Anel F. Mukhamedgalieva, Moscow Mining Institute (Russia)

Published in SPIE Proceedings Vol. 1132:
High Power Lasers and Laser Machining Technology
Michel Gaillard; A. Quenzer, Editor(s)

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