Abstract
The velocity and attenuation of ultrasonic waves in carbon tetrachloride, carbon disulfide, and benzene are measured as a function of pressure for a range from 1 to 1400 atmospheres. The frequencies used varied from 2 mc to 10 mc and at least two temperatures in the range from 0°C to 70°C were used for each liquid. The velocity and attenuation were obtained by a comparison of the amplitudes and arrival times of two reflected pulsed signals, initiated by the same source, but traversing paths of different length. The absorption per wavelength decreases continuously with increasing pressure for all three liquids. The experimental results will be analyzed in terms of the various mechanisms which have been proposed to explain absorption in excess of that attributed to shear viscosity.
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