New experimental data on vitreous silica, collected in a previously unexplored frequency region between 60 and 120 GHz, are reported. The Brillouin ultraviolet light scattering technique has been used to measure the dynamic structure factor for two exchanged momenta, Q = 0.078 and 0.11 nm(-1). The experiment has been performed using the IUVS beam line at the Elettra Synchrotron radiation facility in Trieste. An evidence of a transition between two different dynamical regimes is discussed.
Brillouin ultraviolet light scattering on vitreous silica
G Baldi;S Caponi;L Comez;
2005
Abstract
New experimental data on vitreous silica, collected in a previously unexplored frequency region between 60 and 120 GHz, are reported. The Brillouin ultraviolet light scattering technique has been used to measure the dynamic structure factor for two exchanged momenta, Q = 0.078 and 0.11 nm(-1). The experiment has been performed using the IUVS beam line at the Elettra Synchrotron radiation facility in Trieste. An evidence of a transition between two different dynamical regimes is discussed.File in questo prodotto:
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