Jump to main content
Jump to site search


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

Abstract

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 validated by using two xenon isotopes.

Back to tab navigation

Publication details

The article was received on 27 Apr 2018, accepted on 17 May 2018 and first published on 18 May 2018


Article type: Communication
DOI: 10.1039/C8JA00120K
Citation: J. Anal. At. Spectrom., 2018, Accepted Manuscript
  •   Request permissions

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

    A. Kuwahara, Y. Aiba, S. Yamasaki, T. Nankawa and M. matsui, J. Anal. At. Spectrom., 2018, Accepted Manuscript , DOI: 10.1039/C8JA00120K

Search articles by author

Spotlight

Advertisements