A NEW $^{3}\Pi$ ELECTRONIC STATE OF PtO.

Author Institution: Department of Chemistry, University of ArizonaA new $^{3}\Pi$ electronic state of PtO has been observed between 7100 $cm^{-1}$ and 8015 $cm^{-1}$ above $the^{3}\sum^{-}$ ground state. The $^{3}\Pi_{2}$ - $^{3}\sum_{1}^{-}$, $^{3}\Pi_{1}$ - $^{3}\sum_{1}^{-}$, and $^{3}\Pi_\infty$ - $^{3}\sum_{1}^{-}$ subbands were recorded in emission from a Pt Hollow cathode with the Fourier transform spectrometer associated with the McMath Solar Telescope at Kitt Peak. Molecular constants, including $\Omega$-doubling parameters for the new electronic state, have been determined from the data