High Frequency Sound Waves in Vitreous Silica

1998/01/21 by Rossana Dell’Anna, R. Dell'Anna, Giancarlo Ruocco +3 · 6 citations
Earth and Planetary Sciences · Materials Science · Medicine · Physics and Astronomy · #Advanced MRI Techniques and Applications #Geological and Geochemical Analysis #Glass properties and applications #cond-mat.dis-nn

paper · pdf · doi:10.1103/physrevlett.80.1236

4 pages, Revtex, 4 ps figures; to be published in Phys. Rev. Lett., February 1988

arxiv created 1998/01/21 · openalex publication_date 1998/02/09 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

We report a molecular dynamics simulation study of the sound waves in vitreous silica in the mesoscopic exchanged momentum range. The calculated dynamic structure factors are in quantitative agreement with recent experimental inelastic neutron and x-ray scattering data. Analysis of the longitudinal and transverse current spectra allows us to discriminate between opposite interpretations of the existing experimental data in favor of the propagating nature of the high frequency sound waves.

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