Abstract
A systematic comparison of the known data on the singlets and triplets arising from sp, sd, sf, and d 9 s configurations with the theory of Houston shows that the theory gives a good account of the deviations from the Landé interval rule which accompany departure from Russell-Saunders coupling. There are numerous significant discrepancies, however. Writing 1 L l and 3L l +1, 3 L l , 3 L l -1 with L = P, D, F, when l = 1, 2, 3 for the term values, we plot as abscissa (3 L l -1 - 3 L l +1)/|3 L l - 1L l | and (3 L l -1 - 3 L l )/(3 L l - 3 L l +1) as ordinate if (3 L l - 1 L l +1) is positive, otherwise the reciprocal of this quantity. Houston’s equations (12) give functional relations between these interval ratios which are compared with the experimental values.
This paper was presented at the Washington meeting of the American Physical Society, April 24, 1930.
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References
W.V. Houston, Phys. Rev. 33, 297 (1929).
S. Smith, Phys. Rev. 34, 397 (1929).
S. Smith, Phys. Rev. 35, 236 (1930).
A. Meissner, Zeits. f. Physik 40, 839 (1927).
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© 1991 Springer-Verlag New York Inc.
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Condon, E.U., Shortley, G.H. (1991). Singlet-Triplet Interval Ratios for sp, sd, sf, p 5 s and d 9 s Configurations. In: Barut, A.O., Odabasi, H., van der Merwe, A. (eds) Selected Scientific Papers of E.U. Condon. Springer, New York, NY. https://doi.org/10.1007/978-1-4613-9083-1_15
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DOI: https://doi.org/10.1007/978-1-4613-9083-1_15
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