ロングショートダブルパルスを用いたレーザー誘起ブレークダウン分光による元素定量分析

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  • ロングショートダブルパルスを用いたレーザーブレークダウン分光による元素定量分析
  • ロングショートダブルパルス オ モチイタ レーザー ユウキ ブレークダウン ブンコウ ニ ヨル ゲンソ テイリョウ ブンセキ
  • Quantitative Elemental Analysis Using Long-Short Double-Pulse Laser Induced Breakdown Spectroscopy

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The understanding of the controlling factors is becoming more important to improve the efficiency of industrial systems including steel-making processes, boilers and so on. Laser diagnostics such as laser-induced breakdown spectroscopy (LIBS) makes it possible to monitor these parameters due to their fast response, high sensitivity, and non-contact features. In this study, a new collinear long and short double pulse LIBS method was developed to improve the detection ability and the measurement accuracy by the control of the plasma cooling process using the long pulse-width laser radiation. The plasma generated by the short pulse-width laser is stabilized and maintained at high temperature during the plasma cooling process by long pulse-width laser radiation. The method was demonstrated to have better measurement stability and quantitative measurement characteristics for Manganese and Carbon measurement in the steel samples compared to the normal single pulse LIBS method.

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