ON THE HYPERFINE STRUCTURE OF $NO_{2}$ LEVELS NEAR DISSOCIATION THRESHOLD
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Date
2000
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Ohio State University
Abstract
We report the application of polarization quantum beat spectroscopy (QBS) to probe the hyperfine structure of single $NO_{2}$ molecular eigenstates in the region $2.5 cm^{-1}$ below dissociation threshold $(D_{0}=25128.57 cm^{-1})$. The hyperfine interaction is substantially weaker than that found at energies below $22 000 cm^{-1}$, but is similar on average to that observed $50-100 cm^{-1}$ below threshold. The ratio of $J=3/2$ to $J=1/2$ levels is much larger than that expected on the basis of complete rovibronic mixing, but is consistent with a previous study.
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Author Institution: Department of Chemistry, Marquette University