$CN B^{2}\Sigma^{+}$ ALIGNMENT FOLLOWING VUV DISSOCIATION OF ICN
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Date
1987
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Ohio State University
Abstract
Dispersed CN $B^{2}\Sigma^{+}-X^{2}\Sigma^{+}$ photofragment fluorescence polarization anisotropies measured following ICN dissociation at 157.6 nm vary widely and apparently erratically with emission wavelength, and cannot be converted directly to CN B rotational alignments because of spectral congestion. A flexible linear regression technique is used to extract $CN B^{2}\Sigma^{+}$ alignments for $v^{\prime}=0, 1, 2$, and 3. These alignments range from -0.31 to nearly 0.2 and vary smoothly with N' for each $v^{\prime}$. A model is presented to estimate partial channel CN $B (v^{\prime}=0)$ product populations, and a discontinuity in the experimental $v^{\prime}=0$ alignment is considered.
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Author Institution: Department of Chemistry, University of Cincinnati; Department of Chemistry and the James Franck Institute, University of Chicago