Stabilization of the Spark-discharge Point on a Sample Surface by Laser Irradiation for Steel Analysis

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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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  • Analytical Sciences

    Analytical Sciences 22 (10), 1275-1277, 2006

    社団法人 日本分析化学会

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