Author/Authors :
Fontana، نويسنده , , A. and Rossi، نويسنده , , F. and Caponi، نويسنده , , S. and Fabiani، نويسنده , , E. and Buchenau، نويسنده , , U. and Wischnewski، نويسنده , , A.، نويسنده ,
Abstract :
Measurements of Raman scattering from vitreous silica (spectrosil) in the temperature range 12–1200 K are analyzed and compared with inelastic neutron scattering measurements done on the same sample. The results show a temperature dependence of the quasi-elastic scattering. Comparing this study with acoustical attenuation measured at 30 GHz by Brillouin light scattering, we found that the mechanism giving rise to quasi-elastic scattering in vitreous silica seems to be the same as the one causing the acoustic attenuation.
