Knowledge Bank

In previous $studies1-3$, laser excitation spectra were recorded for the $B2\Sigma +-X2\Sigma +$ and $A2\Pi -X2\Sigma +$ 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 $CN(A2\Pi 1/2)-Ne\to CN(A2\Pi 3/2)+Ne$ and $CN(A2\Pi 3/2)-Ne\to CN(X2\Sigma +)+Ne$. 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-9320094