Anharmonic Decay of High Frequency Phonons in Vitreous Silica

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概要

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• Diffusive propagation profiles of heat pulses in vitreous silica have been measured at 2.3 K. The observed peak arrival times vary linearly with the propagation distance, which is different from the pure diffusion propagation observed in the presence of elastic scattering sites. Our results suggest that the high energy phonons injected into the glass propagate under the influence of elastic scattering (Rayleigh scattering) and anharmonic decay. The experimental results qualitatively agree with the theoretical study of the transport properties of high frequency phonons.

• 社団法人応用物理学会の論文
• 1994-05-30

著者

• 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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