Quasidiffusive Exponential Decay Tail of Heat Pulse in Vitreous Silica (Short Note)

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概要

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• The observed time traces for a heat pulse experiment on vitreous silica decay exponentially with a characteristic decay time of 30μs in the power density range from 10^<-3> to 10^<-2>W/mm^2, suggesting quasidiffusive phonon propagation. The experimental observation of quasidiffusion in Si requires a low excitation density in order to avoid the emergence of a localized source of low-frequency phonons at high density. The observed density is more than three orders of magnitude below the excitation density in weakly photoexcited Si. [DOI: 10.1143/JJAP.41.3168]

• 社団法人応用物理学会の論文
• 2002-05-30

著者

• Ikari Hiroshi

  Department Of Physics Faculty Of Education Shizuoka University

関連論文

• Quasidiffusive Exponential Decay Tail of Heat Pulse in Vitreous Silica (Short Note)

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