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Low-frequency optical phonons in silica

✍ Scribed by Felipe R. Barbosa; Ramakant Srivastava


Publisher
Elsevier Science
Year
1980
Tongue
English
Weight
214 KB
Volume
34
Category
Article
ISSN
0038-1098

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Inelastic neutron scattering from vitreous silica reveals that, in addition to the sound waves, there is a strong contribution from other vibrational modes in the frequency region above 150 GHz. From an analysis of their inelastic structure factor, we have put forward a simple model which can descri