The spectroscopic observation of the CH radical in its a 4Sigma - state
Abstract
The first spectroscopic observation of CH in the a 4Sigma(0-) state are reported. The molecule was generated in a discharge-flow system in the reaction betweeen fluorine atoms and methane or between oxygen atoms and acetylene at a total pressure of about 1 Torr. Several resonances associated with the N = 1 - 0 transitions of 4Sigma(-) CH were observed at three separate laser wavelengths, while those for the N = 2 - 1 transition were observed at two wavelengths. Each observed Zeeman component consists of a well-split doublet arising from proton hyperfine structure. The reasons for assigning the observations to CH in its a 4Sigma(-) state are discussed.
- Publication:
-
Journal of Chemical Physics
- Pub Date:
- February 1988
- DOI:
- 10.1063/1.454086
- Bibcode:
- 1988JChPh..88.2087N
- Keywords:
-
- Chemical Reactions;
- Electron Transitions;
- Free Radicals;
- Ground State;
- Methyl Compounds;
- Spectroscopic Analysis;
- Far Infrared Radiation;
- Magnetic Resonance;
- Atomic and Molecular Physics