FLUORESCENCE DEPLETION SPECTRA FOR THE CN-Ne VAN DER WAALS COMPLEX.

1. Y. Lin and M. C. Heaven, J. Chem. Phys. 94, 5765 (1991) 2. S. Fei and M. C. Heaven, J. Chem. Phys. 98, 753 (1993) 3. S. Fei and M. C. Heaven, Proc. SPIE. 1858, 286 (1993)Author Institution: Emory University, Atlanta, GA 30322In previous $studies^{1-3}$, laser excitation spectra were recorded for the $B^{2}\Sigma^{+}-X^{2}\Sigma^{+}$ and $A^{2}\Pi-X^{2}\Sigma^{+}$ transitions of CN-Ne. Analysis of the B-X system was straightforward, providing information concerning the anisotropy of the ground and excited state potential energy surfaces. Spectra for the A-X system revealed the presence of the predissociation channels $CN(A^{2}\Pi_{1/2})-Ne \to CN(A^{2}\Pi_{3/2}) + Ne$ and $CN(A^{2}\Pi_{3/2})-Ne \to CN(X^{2}\Sigma^{+}) + Ne$. The product state distributions resulting from these predissocations were determined, but the partially resolved CN-Ne A-X bands resisted analysis. Double resonance techniques, using depletion of fluorescence from known lines of the B-X system, are being used to simplify and assign the A-X fine structure. Analyses of these spectra, the derivation of potential energy surface parameters, and interpretations of the predissociation dynamics will be presented. Work supported by NSF under grant CHE-932009