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Analysis of Fourier Transform Jet Emission Spectra of CN $(B^{2}{\Sigma}^+{\rightarrow}X^{2}{\Sigma}^+)$

  • Lee, Sang-Kuk (Department of Chemistry, College of Natural Sciences, Pusan National University) ;
  • Published : 1994.05.20

Abstract

The CN radical was generated in a jet with an inert buffer gas, helium from high voltage dc discharge of the precursor $CH_3CN$. The Fourier transform emission spectra of the O-O band of the $(B^2{\Sigma}^+{\to}X^2{\Sigma}^+)$ transition of CN have been obtained with a Bruker IFS-120HR spectrometer. The spectra show an anomalous distribution of rotational intensity which cannot be explained by a simple Boltzmann distribution. The analysis of the transition frequencies provides molecular constants with high accuracy for both the ground and the excited electronic states of the CN radical.

Keywords

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