# NEAR-INFRARED DIODE LASER SPECTROSCOPY OF THE CCO RADICAL IN THE $\tilde{A}^{3}\Pi - \tilde{X}^{3}\Sigma$ BAND

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 Title: NEAR-INFRARED DIODE LASER SPECTROSCOPY OF THE CCO RADICAL IN THE $\tilde{A}^{3}\Pi - \tilde{X}^{3}\Sigma$ BAND Creators: Fujitake, Masaharu; Ohashi, N. Issue Date: 1992 Publisher: Ohio State University Abstract: The $\tilde{A}^{3}\Pi_{i} - \tilde{X}^{3}\Sigma^{-}$ band of the CCO radical has been reinvestigated by means of near-infrared diode laser spectroscopy with Doppler-limited resolution. The absorption spectrum was measured in the regions of $11607-11919 cm^{-1}, 11960-12011 cm^{-1}$, and $12340-12389 cm^{-1}$, corresponding to the $(000) - (000)$, $(010) - (010)$ and $(010)^{3}\Sigma$ $(-) - (000)^{3}\Sigma$- bands. The $(000) - (000)$ band has been analyzed to obtain detailed molecular constants for $\tilde{A}(000)^{3}\Pi_{i}$ state including A -- type doubling $constants^{1}$. In addition, numerous perturbations, accompanied by intensity anomalies in some cases, have been found in the $Q = 0$ and 1 sublevels of the $\tilde{A}^{3}\Pi_{i}(000)$ state in the present study. Analysis of the $(010) - (010)$ and $(010)^{3}\Sigma^{(-)} -- (000)^{3}\Sigma$- bands yielded molecular constants for both the $\tilde{A}(010)$ and $\tilde{X}(010)$ states, including Renner parameters in the $\tilde{A}(010)$ state and 1-type doubling constant in the $\tilde{X}(010)$ state. Description: $^{1}$M. Fujitake, R. Kiryu and N. Ohashi, J. Mol. Spectrosc., in press. Author Institution: Department of Physics Faculty of Science, Kanazwa University URI: http://hdl.handle.net/1811/12692 Other Identifiers: 1992-MF-04