LASER SPECTROSCOPY OF THE $A^{4}\Pi – X^{4}\Sigma$ TRANSITION OF MoN
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Date
1994
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Ohio State University
Abstract
MoN was produced by reacting vaporized $MoCl_{5}$ and microwave discharged $N_{2}$ gas in an oven. Chemiluminescence of pink-blue color was observed. The ${^{4}\Pi}- X^{4} \Sigma^{-}$ transition of MoN between 5990-6350 {\AA} has been studied using laser induced fluorescence (LIF) spectroscopy . We have observed in addition to the stronger $\Delta \Sigma=0$ transitions, the weaker $\Delta \Sigma=\pm 1$ transitions. The use of wavelength-resolved fluorescence spectrum for the assignment of spectral lines and the determination of vibrational constants of the $X^{4} \Sigma^{-}$ state will be discussed. Extra lines have been observed in the wavelength resolved LIF spectrum of the ${^{4}\Pi}_{-1/2}-{^{4}\Sigma}-{_{3/2}}$ subband, which indicates that perturbations exist in this component of the ${^{4} \Pi}$ state. Molecular constants of both the $A {^{4} \Pi}$ and $X {^{4} \Sigma}^{-}$ states will be reported.
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Author Institution: Department of Chemistry, The University of Hong Kong