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

• 安田 剛大

  中部大学工学部電子情報工学科

• 村上 真浩

  中部大学工学部電子情報工学科

• 葛谷 幹夫

  中部大学工学部電子情報工学科

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

  分光研究 53 (4), 243-248, 2004

  社団法人 日本分光学会

キーワード

• Laser-induced plasma
• time-resolved spectroscopy
• argon at reduced pressure
• calibration curve
• analysis of rocks

詳細情報

• CRID: 1390001206259723776
• NII論文ID: 10012803516
• NII書誌ID: AN00222531
• DOI: 10.5111/bunkou.53.243
• ISSN: 18846785
• ISSN: 00387002
• NDL書誌ID: 7064189
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I7064189
• 本文言語コード: en
• データソース種別:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可