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Discrepancy between the Spectro-Isotopic and the Mass Spectrometric Results for the Natural Abundance Ratio of the Lithium Isotopes

Nature volume 176, pages 1228–1229 (1955)Cite this article

Abstract

THE determination of the natural abundance ratio of the lithium isotopes lithium-6 and lithium-7 by spectroscopic measurement of the ratio of the line intensities of the isotopic components of the 6708 A. resonance line has given results not in agreement with the mass-spectrometric figure. A summary of the work in both fields up to 1951 has been given by Baldock and Patton1. In subsequent work on the spectro-isotopic assay, Stukenbroeker, Smith, Werner and McNally2 calibrated the optical determination by samples analysed mass-spectrometrically and showed that the method could yield a 2σ precision of slightly more than 1 per cent using photographic recording.

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References

  1. Baldock, R., and Patton, J. R., unclassified document Y-758 (1951).

  2. Stukenbroeker, G. L., Smith, D. D., Werner, C. K., and McNally, jun., J. R., J. Amer. Chem. Soc., 42, 383 (1952).

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Authors and Affiliations

  1. Emission Spectroscopy Group, Atomic Energy Research Establishment, Harwell, Berks

    A. H. GILLIESON & R. P. THORNE

Authors
  1. A. H. GILLIESON
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  2. R. P. THORNE
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GILLIESON, A., THORNE, R. Discrepancy between the Spectro-Isotopic and the Mass Spectrometric Results for the Natural Abundance Ratio of the Lithium Isotopes. Nature 176, 1228–1229 (1955). https://doi.org/10.1038/1761228a0

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