Abstract
THE correspondence principle alone is not sufficient to determine accurately the intensities of spectral lines for small values of the quantum numbers. But, as recent investigations have shown, it seems that, in the case of multiplets, this is possible with the aid of the rules found by H. C. Burger and H. B. Dorgelo (Zeit. f. Phys., 23, p. 258, 1924), which state that the sum of the intensities of the lines coming from (or going to) a certain level must be proportional to the inner quantum number (= statistical weight) of this level.
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DIEKE, G. Intensities in Band Spectra. Nature 115, 875 (1925). https://doi.org/10.1038/115875a0
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DOI: https://doi.org/10.1038/115875a0
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