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HIGH RESOLUTION IR SPECTRA AND ANALYSIS OF THE $\nu_{9}$ BAND OF ETHANE
Stephen J. Daunt, W. E. Blass, George W. Halsey, Kenneth R. Fox, R. J. Lovell, Herbert Flicker, John A. King
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Abstract
The fundamental band of $C_{2}H_{6}$ at $822\\;cm^{-1}$ has been analyzed using new spectra taken with the UT grating Instrument $(\\Delta \\nu = 0.04 - 0.05\\;cm^{-1})$, and the UT and LASL interferometric instruments $(\\Delta \\nu = 0.125 - 0.500\\;cm^{-1}$ and $\\Delta \\nu = 0.040\\;cm^{-1}$, respectively). We have obtained the following preliminary values of excited state constants: \\begin{eqnarray*} \\nu_{0}&=&821.738\\;cm^{-1}\\\\ \\alpha_{9}^{B}&=&(B^{\\prime\\prime}-B^{\\prime})=+1.29\\times 10^{-3}\\;cm^{-1}\\\\ \\alpha_{9}^{A}&=&(A^{\\prime\\prime}-A^{\\prime})=-7.5\\times 10^{-3}\\;cm^{-1}\\\\ \\zeta_{9}^{Z}&=&+0.259\\\\ q_{9}{^{(+)}}&=&-1.8\\times 10^{-3}\\;cm^{-1}\\\\ \\end{eqnarray*} In this analysis we used improved ground state parameters obtained from GSCD fits of the $\\nu_{9} + \\nu_{12}$ band by Blass and Lin, These constants will be presented in another paper at this meeting.