FAR-INFRARED LASER STARK SPECTROSCOPY OF $^{13}CD_{3}OD$
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Date
1997
Journal Title
Journal ISSN
Volume Title
Publisher
Ohio State University
Abstract
The Stark spectrum of $^{13}CD_{3}OD$ has been investigated in the far-infrared region using the HCN and DCN lasers. The spectra were taken at room temperature for both parallel and perpendicular polarizations using electric fields up to 60 000 J=9 to $\frac{1}{cm}$. An extensive series of absorption lines observed with the 337 $\mu$m line has been assigned to the, J = 9 to 15 members of the $K = 5 \leftarrow 4 E_{2}$ Q-branch in the $\nu_{t} = 1$ torsional state. Further analysis of this Q-branch multiple has yielded the branch origin. $\nu_{0}$ = 882 847.7 MHz, and expansion coefficients, a = 93.6785 MHz and b = -0.2689 MHz. An R-branch transition observed at 337 $\mu$m has been assigned as $J_{K} = 9_{7} \leftarrow 8_{6} A \nu_{t} =0$. Two families of rensonances observed with the 195 $\mu m$ line have been tentatively identified as members of the Q-branch multiplet $J_{K} = J_{7} \leftarrow J_{8} E_{2}\nu_{t}, = 2$ for J=11 and 12. Zero-field frequencies for all assigned transitions are given with improved accuracy over those calculted from the available molecular constants.
Description
$^{m}$M. Jackson, G. R. Sudhakaran. E. Gansen, J. Mol. Spectrasc. 176, 439--441 (1996)
Author Institution: Department of Physics, New Mexico State University; Department of Physics, University of Wisconsin; Laser Programme, Centre for Advanced Technology; Department of Physics, University of New Brunswick
Author Institution: Department of Physics, New Mexico State University; Department of Physics, University of Wisconsin; Laser Programme, Centre for Advanced Technology; Department of Physics, University of New Brunswick