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cond-mat.dis-nn2008★ 81 cited
Hypersound damping in vitreous silica measured by picosecond acoustics
A. Devos, M. Foret, S. Ayrinhac +2
The attenuation of longitudinal acoustic phonons up to frequencies nearing 250 GHz is measured in vitreous silica with a picosecond optical technique. Taking advantage of interfere…
cond-mat.dis-nn2005
Anharmonic vs. relaxational sound damping in glasses: II. Vitreous silica
R. Vacher, E. Courtens, M. Foret
The temperature dependence of the frequency dispersion in the sound velocity and damping of vitreous silica is reanalyzed. Thermally activated relaxation accounts for the sound att…
cond-mat.dis-nn2005
Anharmonic vs. relaxational sound damping in glasses: I. Brillouin scattering from densified silica
E. Rat, M. Foret, G. Massiera +4
This series discusses the origin of sound damping and dispersion in glasses. In particular, we address the relative importance of anharmonicity versus thermally activated relaxatio…