Abstract
RECENTLY Kronig put forward a theory of perturbations in band spectra (Zeit. f. Phys., 50, 347; 1928). He found that if two molecular terms with the same j, which have besides to fulfil certain other conditions, come close together, their mutual influence has the effect that they seem to repel each other. Hitherto no band spectrum has been sufficiently known to permit of testing Kronig's predictions.
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DIEKE, G. Perturbations in the Band Spectrum of Helium. Nature 123, 446–447 (1929). https://doi.org/10.1038/123446a0
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DOI: https://doi.org/10.1038/123446a0
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