HIGH RESOLUTION SPECTRA OF SIXTEEN Q BRANCHES IN THE $\nu_{9}$ FUNDAMENTAL OF ETHANE

Abstract

Author Institution: Theoretical Division, Los Alamos Scientific Laboratory; Department of Physics and Astronomy, University of TennesseeThe Q branches $^{P}Q_{6}$ through $^{R}Q_{9}$ of the $\nu_{9}$ ethane fundamental at 821 $cm^{-l}$ have been resolved at $300^\circ K$ using tunable diode lasers. A preliminary analysis yields $\Delta B = (- 1.27 \pm 0.02) \times 10^{-3} cm^{-1}$. Several of the branches exhibit line splittings that may result from the tunneling of the hindered rotation of the ethane molecule