SUBMILLIMETER SPECTROSCOPY OF $(H_{2}0)_{2}$ AND $(D_{2}0)_{2}$
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Date
1990
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Ohio State University
Abstract
Recently much work has been done on $(H_{2}O)_{2}$ and $(D_{2}O)_{2}$ in the microwave, FIR and infrared regions. We have extended this work by studying some new bands for these dimers in the submillimeter region. In $(H_{2}O)_{2}$ the bands $K=O\rightarrow K=1 (E_{1}$ and $A_{1}$ symmetry) and $K=1 \rightarrow K=2 (E_{2}$ symmetry) have been measured, while in $(D_{2}O)_{2}$ the bands $K=1\rightarrow K=2 (E_{1}, A_{1}, B_{1}$ and $E_{2}$ symmetry) were investigated. The dimers were formed in a continuous slit nozzle expansion. The submillimeter radiation was generated either by a tunable FIR laser sideband spectrometer or by direct multiplication of klystrons between 55 and 110 GHz. The measured bands provide valuable information on the A rotational constant and the tunneling splittings for the dimers. In the search for $(D_{2}O)_{2}$, some bands of A$r-D_{2}O$ were found as well, which have not been assigned yet.
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Author Institution: Dept. Molecular and Laser Physics, University of Nijmegen