Attenuation of Sound in Indium at Melting Point
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概要
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Temperature variation of the attenuation in indium has been measured by thepulse transmission method in the temperature range from 120 to 183'C throughthe melting temperature of 156.4'C. The frequency of sound was 1 MHz. Thevalue of attenuation in solid phase just below the melting point was 0.154 neper/cm, and thxt in liquid phase just above the melting point was 0.123 neper/cm.At the melting point, a large absorption of ultrasonic wave was seen and its valueamounted to 0.273 neper/cm in the melting process and 0.539 neper/cm in thesolidification process. The increase of the attenuation at the melting point maybe due to the Rayleigh scattering, which is appreciable in the mixed state of theliquid and the suspending crystallites.
- 1985-06-15
著者
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Sumino Yoshio
Regional Center For Earthquake Prediction And Observation Faculty Of Science
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Kamioka Hiroaki
Department Of Physics Faculty Of Engineering Gfu University
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