Abstract
THE diffuse bands appearing very strongly in the flame spectra of the alkaline-earth metals have been identified as due to the hydroxide radicals, CaOH, SrOH and BaOH. This identification is based on the work of James and Sugden1 on hydrogen–air flames, employing photometric methods, and on work on isotope shifts with deuterium, which have been obtained for CaOH by Gaydon2 and for SrOH by Huldt and Lagerqvist3. The flame method has now been extended to the strong red and infra-red barium bands.
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References
James, C. G., and Sugden, T. M., Nature, 175, 333 (1955).
Gaydon, A. G., Proc. Roy. Soc., A, 231, 437 (1955).
Huldt, L., and Lagerqvist, A., Naturwiss., 42, 365 (1955).
Pearse, R. W. B., and Gaydon, A. G., “The Identification of Molecular Spectra” (2nd edit., Chapman and Hall, London, 1950).
James, C. G., and Sugden, T. M., Nature, 171, 428 (1953).
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BULEWICZ, E. Flame Spectrum of Barium: Red and Infra-Red Bands. Nature 177, 670–671 (1956). https://doi.org/10.1038/177670a0
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DOI: https://doi.org/10.1038/177670a0
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