Abstract
THE spectrum of trebly ionised lead, which has been studied by several authors ending with S. Smith1, requires modification in several respects. I have shown that 7p2Pā7d2D is really 7p2Pā8s2S and confirmed this by obtaining further combinations with the 8s2S term. This provides a series of 2S terms the values of which can be accurately calculated by Hicks's formula. 6s2S comes out equal to 340180, giving an ionisation potential of 41.9 volts.
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Phys. Rev., 36, 1; 1932.
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KISHEN, J. Spectrum of Trebly Ionised Lead. Nature 130, 739 (1932). https://doi.org/10.1038/130739c0
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DOI: https://doi.org/10.1038/130739c0
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