# AN EMISSION SYSTEM OF THE IO MOLECULE

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 Title: AN EMISSION SYSTEM OF THE IO MOLECULE Creators: Durie, R. A.; Legay, F.; Ramsay, D. A. Issue Date: 1959 Publisher: Ohio State University Abstract: A band system of the IO molecule, first observed by Coleman, Gaydon and $Vaidya^{1}$ in emission from an oxyhydrogen flame to which methyl iodide was added, has been photographed under high resolution using a 21 ft. concave grating spectrograph. Approximately forty bands have been observed in the region 4000 to 7000 {\AA}. The rotational structure of the bands indicates that the transition is of the type $^{2}\Pi {}^{2}\Pi$. The analysis of the bands and the molecular constants of IO will be discussed. Description: $^{1}$ Coleman, E.H., Gaydon, A. G. and Vaidya, W. M. Nature 162 , 108 (1948). Author Institution: Division of Pure Physics, National Research Council, Ottawa URI: http://hdl.handle.net/1811/7804 Other Identifiers: 1959-B-1