Analysis of the Effluent from a High Voltage Spark Discharge with a Microwave-Induced Plasma

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Abstract:

A high voltage spark discharge was used to sample ferrous alloy samples in a point-to-plane configuration. An enclosed Petry spark stand was used so that the effluent from the spark could be put into a microwave discharge sustained at 2450 MHz. The emission from the eroded metals in the microwave discharge was monitored with a PARC Vidicon detector. This method of detection provided spectral simplification and improved signal-to-background ratios up to six-fold over the emission observed from the spark discharge. The emission from the microwave was shown to be linear with concentration for many lines observed.

Keywords: Emission spectroscopy; Microwave discharge; Spark

Document Type: Research Article

DOI: http://dx.doi.org/10.1366/0003702844555601

Affiliations: 1: Department of Chemistry, University of Wisconsin, Madison, Wisconsin 53706; present address: The Dow Chemical Company, Midland, MI 48640 2: Department of Chemistry, University of Wisconsin, Madison, Wisconsin 53706; present address: Department of Chemistry, St. Olaf College, Northfield, MN 55057

Publication date: May 1, 1984

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