FIR LASER STARK SPECTROSCOPY OF $CH_{3}OH$ AT $190 \mu m$ and $195 \mu m$.

Abstract

The FIR laser Stark spectrum of methanol has been investigated at $\lambda = 190 \mu m$ and $195 \mu m$ of the DCN laser. The spectrum has been taken up to 60,000 volts/cm both parallel and perpendicular polarizations. The low field structure observed with the $190 \mu m$ line is assigned as the $J_{k} = 173 \leftarrow 162 E_{2}. v_{t} = 0$ torsional state. A relatively strong transition observed with the $195 \mu m$ and also the $195 \mu m$ line is tentatively identified as the $J_{k} = 114 \leftarrow 103 E_{1}, v_{t} = 0$ torsional state.