THE ABSORPTION SPECTRUM OF $H_{2}O$ AND $D_{2}O$ IN THE 600-1050 A REGION
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Date
1972
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Ohio State University
Abstract
The absorption spectra of $H_{2}O$ and $D_{2}O$ have been obtained by photographic and photoelectric techniques using a 2.2 meter vacuum spectrograph and a 1-meter vacuum monochromator, respectively. The helium continuum was used as a background source. Previously determined Rydberg $series^{1}$ for $H_{2}O$ converging to the (0,0,0,) level of the ionic ground state ($\bar{X}\ ^{2}B_{1}$) have have been extended and their series limit was determined to be 101 784 $cm^{-1}$. The analogous and previously unreported series for $D_{2}O$ have also been determined and their series limit is 101 920 $cm^{-1}$. For $H_{2}O$ and $D_{2}O$, the region 800-970 {\AA} consists primarily of vibrational progressions which have $\Delta G$ values very similar to the spacing of the (O, $V_{2}^{\prime}, O)$ levels for the first excited state ($\bar{A}\ ^{2}A_{1}$) of their respective $ions^{2}$; indicating that they belong to Rydberg members converging to this state. These bands will be discussed further.
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$^{1}$ W.C. Price, J. Chem. Phys. 4, 147 (1936). $^{2}$ C.R. Brundle and D.W. Turner, Proc. Roy. Soc. (London) A307, 27 (1968).""
Author Institution: Air Force Cambridge Research Laboratories
Author Institution: Air Force Cambridge Research Laboratories