Abstract
THE so-called 3A bands of CO in the region 2200–2600 A. have been excited with high intensity in a discharge through neon in a Geissler tube with carbon electrodes, and the (0,1), (0,2) and (0,3) bands at 2389, 2489 and 2596 A. have been photographed in the first order of a large Hochheimized concave grating (dispersion 1.3 A./mm.). By fine-structure analysis twelve branches have been detected in each band, the others being weak and overlapped. Of these twelve branches, six form heads, namely, O3, o2, P3, P2, P1, Q1 in order of diminishing wavelengths, and six do not form heads, namely, R3, R2, R1, Q3, Q2, S1. This shows the upper state to be a 3 state, the rotational constant of which is found to be 1.9563 cm.1 from the average of three times six double combinations for the upper state.
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Gerö L., Z. Phys., 100, 374 (1936).
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SCHMID, R., GERÖ, L. Rotational Analysis of the 3A Bands of CO. Nature 139, 928 (1937). https://doi.org/10.1038/139928b0
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DOI: https://doi.org/10.1038/139928b0
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