ULTRASONIC ATTENUATION IN ICE CRYSTALS NEAR THE MELTING TEMPERATURE

Y. Hiki , J. Tamura

Ultrasonic attenuation in crystals of ice Ih has been measured as functions of frequency (15 ~ 85 MHz) and temperature (- 8°C ~ - 0.1°C). Data were analyzed on the basis of vibrating string model of dislocation, and the following results have been obtained : Density of dislocations is on the order of 106 cm-2 ; pinning of dislocations may be due to impurity ions ; dislocation density severely fluctuates with time near the melting point.

Domaines: Articles anciens

Y. Hiki, J. Tamura. ULTRASONIC ATTENUATION IN ICE CRYSTALS NEAR THE MELTING TEMPERATURE. Journal de Physique Colloques, 1981, 42 (C5), pp.C5-547-C5-552. ⟨10.1051/jphyscol:1981583⟩. ⟨jpa-00221126⟩