Abstract
SOME years ago, in a study of the triplet system, d(?3Π) – a 3Πr of carbon monoxide, Herman and Herman1 observed a progression of bands of similar appearance which they assigned to a new system. They suggested that the upper state of this system was d and that the lower state was a new triplet-level, lying close to a 3Π. Later work2,3 on the forbidden systems of carbon monoxide observed in the absorption spectrum in the Schumann region has provided detailed information about some of the triplet-levels, and the object of this communication is to show that the Herman system arises in fact from the transition e 3Σ− – a 3Πr.
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References
Herman, L., and Herman, R., C.R. Acad. Sci., Paris, 225, 230 (1947); J. Phys. Rad., 9, 160 (1948).
Herzberg, G., and Hugo, T. J., Canad. J. Phys., 33, 757 (1955).
Tanaka, Y., Jursa, A. S., and LeBlanc, F., J. Chem. Phys., 26, 862 (1957).
Pearse, R. W. B., and Gaydon, A. G., The Identification of Molecular Spectra (London: Chapman and Hall, 1950).
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BARROW, R. Triplet Bands of Carbon Monoxide : the System e 3Σ – a 3Π. Nature 189, 480–481 (1961). https://doi.org/10.1038/189480b0
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DOI: https://doi.org/10.1038/189480b0
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