BRILLOUIN SPECTRA OF LIQUIDS USING He-Ne LASERS.
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Publisher:Ohio State University
Brillouin spectra of six liquids: acetone, ethyl alcohol, water, carbon bisulfide, toluene and carbon tetrachloride have been obtained using a He-Ne laser as the light source and employing photoelectric detection. The velocity of sound has been measured with a precision of $\pm 0.2$ per cent in most cases. The intensities of the central component and the Brillouin components have been measured. Since the liquid samples were prepared so that they were sensibly optically empty, a comparison of the intensities can be made with the theoretical predictions of Landau and Placzek.
Author Institution: Physics Department, The Pennsylvania State University