Abstract
No satisfactory explanation seems to have been given as yet of the measurements made by Grebe and Konen (Grebe and Konen, Phys. Zeits., 22, p. 546 (1921)) on the band spectra of lead isotopes. They observed that, in the case of uranium lead, the lines of the band at 4270 showed an average shift to the violet of 0.055 Å, as compared with those of ordinary lead, and that the lines were much sharper in the former case than in the latter.
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BIELER, E. Band Spectra of Lead Isotopes. Nature 115, 980 (1925). https://doi.org/10.1038/115980a0
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DOI: https://doi.org/10.1038/115980a0
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