Time-Dependent Specific Heat in Vitreous Silica Using Diffusivity Measurement

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概要

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• Pulsed diffusivity measurement of vitreous silica with the sample immersed in liquid helium has been performed. The observed short-time diffusivity is in good agreement with the dc diffusivity over the temperature range from 1.5 K to 3.9 K, which is consistent with the earlier diffusivity measurements. Our result at 1.5 K is, however not consistent with the time-dependent specific heat measurement in an adiabatic sample arrangement. This may be due to the different sample-to-bath time constants. The diffusivity at low temperatures seems to remain an unsolved problem.

• 社団法人応用物理学会の論文
• 1993-05-30

著者

• Ikari H

  Shizuoka Univ. Shizuoka Jpn

• Ikari Hiroshi

  Faculty Of Education Shizuoka University

関連論文

• Electric Field Dependence of Positronium Formation in Crystalline Quartz
• Frequency Dependence of Phonon Mean Free Path in Vitreous Silica : Physical Acoustics
• Anomalous Oscillatory Structure in Heat Pulse Diffusion Profiles at a High Power : Physical Acoustics
• Time-Dependent Specific Heat in Vitreous Silica Using Diffusivity Measurement
• Anharmonic Decay of High Frequency Phonons in Vitreous Silica

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