PRECISION CONSTANTS OF THE CYANOGEN RED SYSTEM WITH A PERTURBATION ANALYSIS
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Date
1970
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Publisher
Ohio State University
Abstract
A $\chi^{2}$ test has been used to obtain improved molecular constants for the A $^{2}\Pi-X^{2}\ \Sigma$ system of the $C^{12} N^{14}$ molecule. It is found that these constants predict wavenumbers that agree with the observed values to within 0.1 \AA for the rotational lines of the lowere vibrational bands up to $N^{\prime}^{\prime}=80$ and for the higher bands up to $N^{\prime}^{\prime} = 50$. The rotational lines of the (2,0) and (3,1) vibration-bands of the $C^{12} N^{14}$ radical have also been computed with these spectroscopic constants and the wavenujbers agree within 0.1 \AA, if the electronic isotope shift between the $C^{12}$ $N^{14}$ and $C^{13} N^{14}$ molecules is 0.2 \AA In the present calculation the effect of degenerate perturbations between the $^{2}\Pi$ and $^{2}\Sigma$ states is included.
Description
\footnote{This work was supported by N.A.S.A. Grant NGR-39 005-066.}
Author Institution: Astronomy Department,, Indiana University
Author Institution: Astronomy Department,, Indiana University