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A Raman Cell for Low Temperature Liquids

Volume 28, Number 2 (April 1974) Page 194-195

Brown, Chris W.; Hopkins, Alfred G.; Daly, Francis P.


The difficulties in measuring exact vibrational frequencies of gases, liquids, and solids are well known. In spectra of gases rotational transitions occurring simultaneously with vibrational transitions increase the the complexity of the bands. In spectra of solids and liquids intermolecular interactions complicate the spectra or broaden the bands. To eliminate these interferences and to obtain exact vibrational frequencies, spectra of the desired molecules can be measured by isolating the molecules in an inert environment. The matrix isolation technique, which has received considerable attention in recent years, is a good example of this method.