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Journal Articles

High spectral resolution of diode laser absorption spectroscopy for isotope analysis using a supersonic plasma jet

Kuwahara, Akira; Aiba, Yasuaki*; Yamasaki, Shinya*; Nankawa, Takuya; Matsui, Makoto*

Journal of Analytical Atomic Spectrometry, 33(7), p.1150 - 1153, 2018/07

 Times Cited Count:1 Percentile:79.71(Chemistry, Analytical)

Although high-temperature plasma sources have been used for direct isotope analysis of solid samples, the spectral resolution of diode laser absorption spectroscopy in high-temperature plasma is limited by the Doppler broadening of atomic absorption lines. Thus, a decrease in translational temperature is necessary to enhance the spectral resolution and distinguish isotope shifts due to mass number. In this study, a supersonic plasma wind tunnel, also called an arc-jet plasma wind tunnel, was used to enhance spectral resolution drastically, and a demonstration was carried out using natural stable xenon isotopes. As a result, the temperature was found to be about 180 K and the spectral resolution was about one order of magnitude higher than that of the conventional high-temperature source. Additionally, the method proposed herein was verified by using two xenon isotopes.

Journal Articles

Development of an isotope analysis method based on diode laser absorption spectroscopy using an arc-jet plasma wind tunnel

Kuwahara, Akira; Aiba, Yasuaki*; Nankawa, Takuya; Matsui, Makoto*

Journal of Analytical Atomic Spectrometry, 33(5), p.893 - 896, 2018/05

 Times Cited Count:2 Percentile:63.08(Chemistry, Analytical)

no abstracts in English

Oral presentation

The Effect of the pressure broadening for isotopic analysis using diode laser

Kuwahara, Akira; Aiba, Yasuaki*; Matsui, Makoto*; Nankawa, Takuya

no journal, , 

no abstracts in English

Oral presentation

Characteristic evaluation for laser spectrochemistry using arcjet plasma

Kuwahara, Akira; Aiba, Yasuaki*; Nankawa, Takuya; Matsui, Makoto*

no journal, , 

no abstracts in English

Oral presentation

Development of isotope analytical method based on diode laser absorption spectroscopy using arc-jet plasma wind tunnel

Kuwahara, Akira; Aiba, Yasuaki*; Nankawa, Takuya; Matsui, Makoto*

no journal, , 

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