STARK SPECTROSCOPY OF (CD3OH)-C-13 WITH THE HCN LASER

The laser Stark spectrum of (CD3OH)-C-13 has been studied using the 31 1 mum line of the HCN laser. An extensive series of absorption lines h as been observed and assigned to the J = 3 to 11 members of the K = 2 <-- 3 E1, Q-branch transition in the v(t) = 1 excited torsional state. Zero-field frequencies for all the assigned transitions are given wit h improved accuracy over those calculated from available molecular con stants. For the Q-branch series, the branch origin and the series expa nsion coefficients are also presented.