Quantitative Elemental Analysis of Silicate Rocks by Laser-Induced Plasma Spectroscopy

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著者

    • 安田 剛大 YASUDA Takahiro
    • 中部大学工学部電子情報工学科 Department of Electronics and Information Engineering, College of Engineering, Chubu University
    • 村上 真浩 MURAKAMI Masahiro
    • 中部大学工学部電子情報工学科 Department of Electronics and Information Engineering, College of Engineering, Chubu University
    • 葛谷 幹夫 KUZUYA Mikio
    • 中部大学工学部電子情報工学科 Department of Electronics and Information Engineering, College of Engineering, Chubu University

抄録

A quantitative elemental analysis of silicate rocks was carried out with a laser microprobe analyzer. A Q-switched Nd: YAG laser (90mJ, 10ns) was focused on rock samples in an argon atmosphere at reduced pressure, and the emission spectra from laser-induced plasma were measured using time-resolved spectroscopy. The experimental results showed that the maximum spectral line intensity was obtained in argon at approximately 200 Torr, whereas the spectral line-to-background ratio were maximized at around 60 Torr, by observing the laser plasma with a time delay of 0.4μs. Furthermore, the results of time-resolved spectroscopy of the plasma produced in argon at 200 Torr and 60 Torr indicated that time-resolved measurement of a spectrum in the initial stage of plasma generation (-1μs) at a pressure of 60 Torr was effective for improving the slope of the calibration curve. Based on the results, standard rock samples were analyzed for aluminum, magnesium, calcium, titanium and iron, and linear calibration curves with a slope of unity were obtained by measuring spectra with a gate width of 0.6μs at a delay time of 0.4μs after the laser pulse in argon at 60 Torr.

収録刊行物

  • 分光研究 = Journal of the spectroscopical research of Japan

    分光研究 = Journal of the spectroscopical research of Japan 53(4), 243-248, 2004-08-15

    The Spectroscopical Society of Japan

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各種コード

  • NII論文ID(NAID)
    10012803516
  • NII書誌ID(NCID)
    AN00222531
  • 本文言語コード
    ENG
  • 資料種別
    ART
  • ISSN
    00387002
  • NDL 記事登録ID
    7064189
  • NDL 雑誌分類
    ZM35(科学技術--物理学)
  • NDL 請求記号
    Z15-1
  • データ提供元
    CJP書誌  CJP引用  NDL  J-STAGE 
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