MICROWAVE SPECTROSCOPY OF THE $V=3-10$ LEVELS OF CN($X^{2} \Sigma^{+}$)
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Date
1991
Journal Title
Journal ISSN
Volume Title
Publisher
Ohio State University
Abstract
The fine structure and hyperfine coupling constants were determined by an analysis of the microwave spectrum of the $^{12}CN(X^{2}\Sigma ^{+}), v=3-10$ levels. For example, those for the v=10 level were determined as follows (in MHz): B=51385.864[10], D=0.19606 (fixed), Y=156.777114), b=$-25.841(66)$, c=60.70(21), and eQq=$-0.171(68)$, where values in parentheses denote the standard errors. The analysis of the spin-rotation constants, together with the reported values for the $^{13}CN(X^{2} \Sigma ^{+}), v=0-9$ $levels,^{1}$ showed that the second-order perturbation approximation was insufficient for the $^{12}CN(X^{2} \Sigma^{+}), v=5-10$ levels. The electronic structure of the $CN(X^{2} \Sigma^{+})$ state was studied on the basis of an analysis of the vibrational dependence of the hyperfine constants, where the free atom comparison method was found to be insufficient.
Description
$^{1}$M. Bokey, C. Demuynck, and J.L. Destombes, Chem. Phys. Lett, 102, 141 (1986).""
Author Institution: Department of Chemistry, Nagaoka University of Technology; Department of Astrophysics, Faculty of Science, Nagoya University
Author Institution: Department of Chemistry, Nagaoka University of Technology; Department of Astrophysics, Faculty of Science, Nagoya University