Ultra-Violet Raman Spectrum of Water


So far, the study of the Raman effect has been confined to the visible region of the spectrum only. By the use of an all-quartz apparatus similar to that of glass used by Prof. Wood (Phil. Mag., Oct. 1928), I was able to obtain the effect in the ultra-violet region for water in two hours. Fig. 1 shows that for every bright line in the mercury arc spectrum, there is a Raman band in the spectrum of the light scattered by water. There are altogether eleven bands clearly noticeable in the spectrum, which are marked with arrows. Measurements of the wave-lengths of these Raman bands have shown that water has an absorption band at 2.97 +mn 0.05 , in close agreement with the values ranging from 2.95 to 3.06 from previous infra-red absorption measurements.

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RAO, I. Ultra-Violet Raman Spectrum of Water. Nature 123, 87 (1929). https://doi.org/10.1038/123087c0

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