Abstract
A combined technique with laser irradiation is suggested to control spark discharge for analytical use, having a unique feature that firing points of the spark discharge can be fixed by laser irradiation. Because the spark discharge easily initiates at particular surface sites, such as non-metallic inclusions, called selective discharge, the concentration of some elements sometimes deviates from their average one in spark discharge optical emission spectrometry. Therefore, stabilization of firing points on a sample surface could improve the analytical precision.
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Matsuta, H., Kitagawa, K. & Wagatsuma, K. Stabilization of the Spark-discharge Point on a Sample Surface by Laser Irradiation for Steel Analysis. ANAL. SCI. 22, 1275–1277 (2006). https://doi.org/10.2116/analsci.22.1275
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DOI: https://doi.org/10.2116/analsci.22.1275