Abstract

Recently the suggestion was made that it ought to be possible to make precision isotope ratio measurements (accuracy ≤0.1%) of light elements (H, B, C, N, O) using quantum counting techniques in conjunction with vibrational Raman scattering from high intensity laser beams. Such a method could well have significant advantages over standard mass spectrometry, especially in applications involving the isotopic assay of hundreds of samples, possibly of very small size, as occurs, for example, in studies of fertilizer transport in soils. Similar remarks apply to isotope assays necessary in a number of other physical, chemical, and biological studies.

Oxygen isotope ratio measurements in CO₂ by means of a continuous-wave quantum cascade laser at 4.3 μm

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Isotope ¹⁸O/¹⁶O ratio measurements of water vapor by use of photoacoustic spectroscopy

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Ratio of oxygen and nitrogen Raman cross sections in the ultraviolet

Gregory W. Faris and Richard A. Copeland
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Accurate temperature measurements in flames with high spatial resolution using Stokes Raman scattering from nitrogen in a multiple-pass cell

K. C. Utsav and Philip L. Varghese
Appl. Opt. 52(20) 5007-5021 (2013)

Simultaneous temperature and relative nitrogen–oxygen concentration measurements in air with pure rotational coherent anti-Stokes Raman scattering for temperatures to as high as 2050 K

Albert Thumann, Martin Schenk, Joachim Jonuscheit, Thomas Seeger, and Alfred Leipertz
Appl. Opt. 36(15) 3500-3505 (1997)