http://www.cnr.it/ontology/cnr/individuo/prodotto/ID1803
Low-temperature phonon damping in vitreous silica explored by UV Brillouin spectroscopy (Articolo in rivista)
- Type
- Label
- Low-temperature phonon damping in vitreous silica explored by UV Brillouin spectroscopy (Articolo in rivista) (literal)
- Anno
- 2007-01-01T00:00:00+01:00 (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
- 10.1080/14786430600891360 (literal)
- Alternative label
Baldi, G; Caponi, S; Fontana, A; Benassi, P; Giugni, A; Nardone, M; Sampoli, M (2007)
Low-temperature phonon damping in vitreous silica explored by UV Brillouin spectroscopy
in Philosophical magazine (2003, Print)
(literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
- Baldi, G; Caponi, S; Fontana, A; Benassi, P; Giugni, A; Nardone, M; Sampoli, M (literal)
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- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo
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- ISI Web of Science (WOS) (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
- Univ Trent, Dept Phys, I-38050 Trento, Italy;
Univ Aquila, Dept Phys, I-67100 Laquila, Italy;
Univ Florence, Dept Energet, I-50139 Florence, Italy;
Univ Roma La Sapienza, CNR, INFM, CRS SOFT, I-00185 Rome, Italy (literal)
- Titolo
- Low-temperature phonon damping in vitreous silica explored by UV Brillouin spectroscopy (literal)
- Abstract
- The recently developed technique of Brillouin ultraviolet scattering is used to measure phonon dispersion and damping in the prototypical strong glass v-SiO2. Results on the low temperature (T similar to 10-100 K) sound attenuation at a frequency of similar to 66GHz are presented. The comparison between a model, which takes into account dynamical processes (thermally activated relaxations and the interaction with the bath of thermal vibrations), and the experimental data indicates the presence of a strong static contribution in the region explored by Ultraviolet radiation, supporting the presence of a transition between static and dynamic attenuation mechanisms at a frequency of similar to 100GHz. (literal)
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