Letter | Published:

Absorption Spectra of the Ce+++ Ion in Solution

Nature volume 128, pages 270271 (15 August 1931) | Download Citation



THE experiments of J. Becquerel and W. J. de Haas1 on the paramagnetic rotation of the plane of polarisation of light in a crystal of tysonite (which is a fluoride of cerium and lanthanum) has created an interest in the absorption spectra due to the Ce+++ ion. These authors, as a result of their measurements at low temperatures, and on the assumption that the dispersion produced in tysonite is due to the presence of a single absorption band, came to the conclusions that (i.) the rotation phenomena are due to the presence of the Ce+++ ion, and (ii.) the position of the absorption band is somewhere in the region of 2370 A.

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  1. 1.

    Zeit. fur Phys., 57, p. 11; 1929.

  2. 2.

    Phys. Rev., 33, p. 157; 1929.

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  1. University College of Science, Calcutta, June 8.

    • D. M. BOSE
    •  & S. DATTA


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