Hypersonic Absorption and Velocity from Measurement of Light Scattering: Dichloromethane

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Abstract
Apparatus used to determine hypersonic velocity and absorption in liquids by spectroscopic analysis of light scattered from a single-frequency laser beam is described. A measurement on dichloromethane is presented, the acoustic parameters are derived, and the significance of their relation to ultrasonic measurements and to the theory of relaxation mechanisms is discussed.

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