Abstract.
Wavelength modulation, diode laser atomic absorption spectrometry is applied to measure traces of argon and krypton in other noble gases. Strong transitions from long-lived metastable levels highly populated in a low-pressure dc discharge are induced with a standard diode laser in the spectral range around 811 nm. The detection limits achieved are in the lower ppbv range, and the residual concentrations of Kr and Ar traces in the utilized high-purity noble gases are measured.
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Received: 2 October 2000 / Final version: 3 May 2001 / Published online: 7 June 2001
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Uhl, R., Franzke, J. & Haas, U. Detection of argon and krypton traces in noble gases by diode laser absorption spectrometry . Appl Phys B 73, 71–74 (2001). https://doi.org/10.1007/s003400100614
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DOI: https://doi.org/10.1007/s003400100614