Physics
Scientific paper
Dec 1984
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984cajph..62.1426k&link_type=abstract
Canadian Journal of Physics (ISSN 0008-4204), vol. 62, Dec. 1984, p. 1426-1436.
Physics
14
Carbon Monoxide, Laser Spectroscopy, Molecular Spectroscopy, Dye Lasers, Electron Transitions, Fluorescence, Potential Energy, Spectral Bands
Scientific paper
The allowed fourth-positive-system bands and several previously unobserved intercombination bands of the CO molecule are investigated experimentally using a frequency-selective excitation-spectroscopy (FSES) technique permitting the separation of overlapping electronic systems with widely different transition moments. The principles of FSES are reviewed, and an apparatus comprising a vacuum UV source (based on two-photon resonant-sum frequency mixing of radiation from two N2-laser-pumped dye lasers in an Mg-Kr mixture) and a two-chamber fluorescence cell is described. The results are presented in spectra and tables, and the fact that the intercombination bands were not observed in previous studies using conventional absorption spectroscopy is attributed to overlap with the allowed A1Pi-X1Sigma(+) system.
Klopotek P.
Vidal C. R.
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