Emission Spectroscopy of Liquid-Phase Laser Ablation Plume and Application to in-Situ Elemental Analysis

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  • SAKKA Tetsuo
    Institute of Advanced Energy, Kyoto University Institute of Sustainability Science, Kyoto Univeristy

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  • 液相レーザーアブレーションプルームの発光スペクトルとその場元素分析への応用
  • エキソウ レーザーアブレーションプルーム ノ ハッコウ スペクトル ト ソノ バ ゲンソ ブンセキ エ ノ オウヨウ

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Abstract

The optical emission spectroscopy of the plume formed by liquid-phase laser ablation and its application to underwater in-situ elemental analysis (underwater laser-induced breakdown spectroscopy, underwater LIBS) are reviewed. Since the spectral deformation due to high density in the plume is a major problem, we overviewed the characterization of the plume, its formation mechanism, and the effects of a cavitation bubble. Based on the plume’s properties, we discuss a laser irradiation scheme, such as the double-pulse or long-pulse irradiation, to improve the emission spectra. Finally some applications of underwater emission spectroscopy as an in-situ elemental analysis are described.

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