Study of Ultrasonic Attenuation Using Two State Model

Acoustical measurements in liquid metals have been primarily concerned with the direct measurement of ultrasonic velocity and attenuation in order to obtain information on their structures and thus contributing our knowledge of the liquid state. Ultrasonic attenuation measurement in particular provides means of distinguishing the non-atomic behavior or otherwise of simple liquid metals, which are notably different from the non-metallic liquids in that the major contribution to the attenuation is due to the thermal conductivity loss. A theoretical model has been developed on the lines of the two-state model applicable for associated liquids. This model renders satisfactory results for the excess ultrasonic attenuation in the liquid metals.