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# ROTATIONAL STRUCTURE OF THE $A'_{5}\Delta - x'_{5}\Pi$ ELECTRONIC TRANSITION OF CrO

Please use this identifier to cite or link to this item: http://hdl.handle.net/1811/12875

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 Title: ROTATIONAL STRUCTURE OF THE $A'_{5}\Delta - x'_{5}\Pi$ ELECTRONIC TRANSITION OF CrO Creators: Barnes, M.; Hajigeorgiou, P. G.; Merer, A. J. Issue Date: 1992 Abstract: The laser-induced fluorescence spectrum of CrO was recorded at Doppler-limited resolution in the near-infrared employing a single-frequency tunable cw Ti:sapphire ring laser. The (O,O) band centred near 8400 {\AA} consists of five unperturbed sub-bands each characterized by readily identifiable P, Q, and R branches. Rotational analysis confirmed the nature of the excited state of the red system of CrO as $^{5}\Delta$ in accord with a recent low-resolution $study^{1}$. Spectroscopic measurements from the present analysis were combined with those of the $A^{5}\Sigma^{+} - X^{5}\Pi$ (0,0) transition recorded previously using an FTIR $spectrometer^{2}$. A weighted nonlinear least-squares fit furnished improved molecular parameters for the $A^{5}\Sigma^{+}$ and $X^{5}\Pi$ electronic states as well as the first set of reliable constants for the $A^{5}\Delta$ state. URI: http://hdl.handle.net/1811/12875 Other Identifiers: 1992-TF-01