Abstract
IN the Berichte der deutschen chemischen Gesell-schaft for January 1932 will be found a report by Prof. O. Hahn upon the progress made during the year 1931 in the investigation of isotopic forms of the elements. In a footnote it is explained that the German Chemical Society has arranged for the continuation of such reports upon this subject until such time as an international commission shall have been set up for the purpose. The present report supplements the last biennial report, published in London nearly a year ago in the Annual Reports of the Chemical Society. After referring to the new determination by Mecke and Childs of the relative proportions in oxygen of its isotopes, and to the desirability of retaining oxygen for the present as the standard in estimating atomic weights in spite of its complex nature, the author of the report reviews the latest developments obtained by means of the mass-spectrograph and of band spectra. Two useful tables are appended, containing respectively a list of sixty-three elements, which have hitherto been examined, together with their isotopes, and a list of no fewer than thirty-six pairs of isobars of non-radioactive elements.
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Investigations of Isotopes in 1931. Nature 129, 231 (1932). https://doi.org/10.1038/129231b0
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DOI: https://doi.org/10.1038/129231b0