INVESTIGATION OF THE ABSORPTION SPECTRUM OF $^{12}CF_{4}$ AT 16 $\mu$m

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1980

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Ohio State University

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The absorption spectrum of $^{12}CF_{4}$ has been recorded at room temperature in the range $591-675 cm^{-1}$ with a resolution of about $0.010 cm^{-1}$. The rotational structure of the $\nu_{4}$ band has been analyzed up to $J^{\prime} = 70$. A total a 869 line clusters have been fitted with an overall standard deviation of $0.003 cm^{-1}$, giving rise to the following set of spectroscopic constants (in $cm^{-1}$): m = 631.20029 (27) n = 0.5215235 (66) p = 1.26242 $(85) \times 10^{-4}$ q = -6.210 $(18) \times 10^{-7}$ g = -2.6682 $(24) \times 10^{-5}$ h = 1.2981 $(38) \times 10^{-7}$ $z^{\prime} = -2.01 (26) \times 10^{-11}$ The quoted errors are one standard deviation. A number of transitions belonging to hot bands have also been identified. The analysis of the strongest of them presumably $\nu_{2} + \nu_{4} - \nu_{2}$, is presently in progress.

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