193 citations · 882 across the 16 of their papers we have counts for
5 papers · 1 filter
Hyper-Raman scattering from vitreous boron oxide: coherent enhancement of the boson peak
G. Simon, B. Hehlen, E. Courtens +2
Hyper-Raman scattering spectra of vitreous BO are reported and compared to Raman scattering results. The main features are indexed in terms of vibrations of structural unit…
Acoustic damping in LiO-2BO glass observed by inelastic x-ray and optical Brillouin scattering
B. Rufflé, G. Guimbretière, E. Courtens +2
The dynamic structure factor of lithium-diborate glass has been measured at several values of the momentum transfer using high resolution inelastic x-ray scattering. Much atten…
Glass-specific behavior in the damping of acoustic-like vibrations
B. Rufflé, G. Guimbretière, E. Courtens +2
High frequency sound is observed in lithium diborate glass, LiO--2BO, using Brillouin scattering of light and x-rays. The sound attenuation exhibits a non-trivial depen…
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…
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…