Emission Spectrochemical Analysis of Glass Containing Li and K in High Concentrations Using a XeCl Excimer Laser-Induced Shock Wave Plasma

Authors: Kurniawan, H.1; Kagawa, K.2; Okamoto, M.2; Ueda, M.2; Kobayashi, T.3; Nakajima, S.4

Source: Applied Spectroscopy, Volume 50, Issue 3, Pages 299-424 (March 1996) , pp. 299-305(7)

Publisher: Society for Applied Spectroscopy

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A XeCl excimer laser (20 ns, 25 mJ) was focused on glass samples containing high concentrations of Li and K (10%, 15%, and 20%) in a surrounding gas of air and He. Plasma characteristics are compared in two cases: at 1 atm and at reduced pressure (1-10 Torr). It is shown that the plasma produced at 1 atm cannot be applied to the elemental analysis of solid samples because of strong background emission and self-absorption in the plasma. The spectrum width of the emission line is very wide due to strong interaction in the plasma. In contrast to this, the shock-wave-induced plasma produced at reduced pressure gives a high S/B (ratio of the intensity of the emission line to that of the background) in the measurement of analytical emission lines, and the slope of the calibration curve is near unity in a log-log plot, thus making it possible for emission spectrochemical analysis.

Keywords: Analysis of Li and K; Laser plasma; Quantitative analysis of glass; Shock wave plasma

Document Type: Research Article

DOI: http://dx.doi.org/10.1366/0003702963906195

Affiliations: 1: Spectrascopy Laboratory, Graduate Program in Opto Electronics and Laser Application, University of Indonesia, Jakarta 10430, Indonesia; current address: Hendrik Kurniawan, c/o PT. Lima Sempurna Makmur, 51G-51H, Tomang Raya, Jakarta Barat 11440 Indonesia 2: Faculty of Education, Fukui University, Fukui 910, Japan 3: Department of Electrical and Electronic Engineering, Faculty of Engineering, Fukui University, Fukui 910, Japan 4: Yamamura New Glass Research Center, Nishinomiya 663, Japan

Publication date: March 1, 1996

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