HIGH RESOLUTION INFRARED SPECTRUM OF RADIOACTIVE WATER
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Date
1972
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Ohio State University
Abstract
The infrared spectrum of HTO and $T_{2}O$ has been observed with high resolution ($0.04 cm^{-1}$) from 2000 to $6500 cm^{-1}$. for both species the $\nu_{3}$-band is by far the strongest; in the case of HTO, it is a hybrid band with A and B spectra of similar intensities. From the analysis of the spectrum, band centers and rotational constants have been derived. For HTO, the $2\nu_{2}$, $\nu_{1}$ and $\nu_{3}$ bands are well separated from each other and no resonance occurs; in spite of the fact that 2$\nu 2$ is a very weak band in our spectrum, we hope to obtain from HTO better information on x22 than that coming from other species. While the A constant of HTO is almost as it is for $H_{2}O$ and HDO, B and C are much smaller. As a consequence, the rotational asymmetry of HTO is considerably reduced. A few microwave lines of HTO have also been recorded, namely the $3_{13} - 3_{12}$ transition at 16625 MHz. Since selection rules in infrared and in infrared and in MW are complementary, the MW lines enabled us to connect all ground state energy levels.
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Author Institution: University of Louvain