Extension of the CN Red and Violet Band Systems

The wavelengths and intensity distributions for the red (A 2Π→X 2Σ) and violet (B 2Σ→X 2Σ) bands which were observed in a mixture of active nitrogen and CH4 are given. Bands which originate in the A 2Π and B 2Σ states with excitation energies in the range 4.5-6 eV are well developed. The wavelength range studied was 3000-6700 Å. About 20 of the violet bands and 30 of the red bands have not been reported previously.