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A technique has been devised to measure the temperature of discharge excited diatomic sulfur. The bandshape of the transition from the upsilon' = 8 level in the B(3)Sigma(-) electronic state of the upsilon" = 0 level in the X(3)Sigma(-) state is due to unresolved rotational structure. The observed bandshape was compared to the results of a computer simulation that used the line strength factors of Tatum and Watson for spin-rotation coupling intermediate between Hund's cases (a) and (b).
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Merchant et al. (1980) studied this question.
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