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Preliminary Results of H₂O and D₂O Real-Time Measurement Using Mid-IR Lasers with a Wavelength of 2.9 µm and 3.9 µm

Hiroki KAWASE¹⁾, Hiyori UEHARA^1,2) and Ryo YASUHARA^1,2)

1)

National Institute for Fusion Science, 322-6 Oroshi-cho, Toki 509-5292, Japan

2)

The Graduate University for Advanced Studies, SOKENDAI, 322-6 Oroshi-cho, Toki 509-5292, Japan

(Received 6 January 2022 / Accepted 1 April 2022 / Published 6 June 2022)

Abstract

Liquid phase H₂O and D₂O were measured with mid-IR lasers with wavelengths of 2.9 µm and 3.9 µm. The laser power change over time was observed when the water isotope specie was continuously replaced. Additionally, the concentration ratio of H₂O and D₂O as a function of time was obtained. These results indicate that quantitative measurement of water isotopes using mid-IR lasers in real-time has been successful.

Copyright (c) 2022 The Japan Society of Plasma Science and Nuclear Fusion Research

Keywords

water isotope, mid-IR laser, laser absorption measurement

DOI: 10.1585/pfr.17.1205057

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References

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