Abstract
WITH reference to the interesting and important note by O. Laporte in NATURE of June 16, p. 941, the pairs of differences in the wave numbers which I found in the Na II spectrum do not appear to be accidental. For example, using Laporte's notation: and it is probable that the other pairs of differences will be found as differences between the values of the s′, d, and d′′ terms, which, from the preliminary analysis of Laporte, appear to resemble in number those found by Paschen in the analysis of the NeI spectrum. Mazumdar (Indian Journal of Physics, p. 345; 1928) has noted, previously, that the frequency differences between the four lower levels 3P2 3P1 3P0 1P1 are respectively, 765, 592, and 2481 cm.-1, and he has arranged the multiplets from the combinations 6L25L2M15L2M2 and 5L2(M2M3), but in his classification S P D terms correspond to the p terms of Laporte.
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NEWMAN, F. The Spectrum of Ionised Sodium. Nature 122, 97 (1928). https://doi.org/10.1038/122097b0
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DOI: https://doi.org/10.1038/122097b0
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