Elsevier

Physics Letters A

Volume 184, Issue 6, 24 January 1994, Pages 464-466
Physics Letters A

Brillouin scattering of compacted vitreous silica

https://doi.org/10.1016/0375-9601(94)90525-8Get rights and content

Abstract

Brillouin scattering experiments are performed to study the acoustic properties of a compacted sample of vitreous silica (a-SiO2). Compared to uncompacted a-SiO2 the mean free path of 35 GHz phonons is surprisingly long and depends only weakly on temperature between 50 and 300 K. The temperature variation of the sound velocity exhibits a shallow minimum around 100 K and thus resembles that of normal a-SiO2 on a much smaller scale.

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