Quasi-elastic scattering in glasses and its relation to sound absorption

A. P. Sokolov; V. N. Novikov; B. Strube

doi:10.1209/epl/i1997-00533-6

Quasi-elastic scattering in glasses and its relation to sound absorption

A. P. Sokolov, V. N. Novikov, B. Strube

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Abstract

The quasi-elastic Raman scattering in SiO₂ and PS glasses is analyzed in the framework of the model of a damped oscillator. The model ascribes the quasi-elastic contribution to the scattering of light on damped vibrations which have a quasi-elastic part in their response function. With additional assumption that the vibrations around the boson peak are damped by the same process as the acoustic waves, a good agreement is obtained between acoustic attenuation data and QES spectra in SiO₂ and polystyrene both on a qualitative and a quantitative level.

Original language	English
Pages (from-to)	49-54
Number of pages	6
Journal	EPL
Volume	38
Issue number	1
DOIs	https://doi.org/10.1209/epl/i1997-00533-6
State	Published - Apr 1 1997
Externally published	Yes

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abstract = "The quasi-elastic Raman scattering in SiO2 and PS glasses is analyzed in the framework of the model of a damped oscillator. The model ascribes the quasi-elastic contribution to the scattering of light on damped vibrations which have a quasi-elastic part in their response function. With additional assumption that the vibrations around the boson peak are damped by the same process as the acoustic waves, a good agreement is obtained between acoustic attenuation data and QES spectra in SiO2 and polystyrene both on a qualitative and a quantitative level.",

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AU - Novikov, V. N.

AU - Strube, B.

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N2 - The quasi-elastic Raman scattering in SiO2 and PS glasses is analyzed in the framework of the model of a damped oscillator. The model ascribes the quasi-elastic contribution to the scattering of light on damped vibrations which have a quasi-elastic part in their response function. With additional assumption that the vibrations around the boson peak are damped by the same process as the acoustic waves, a good agreement is obtained between acoustic attenuation data and QES spectra in SiO2 and polystyrene both on a qualitative and a quantitative level.

AB - The quasi-elastic Raman scattering in SiO2 and PS glasses is analyzed in the framework of the model of a damped oscillator. The model ascribes the quasi-elastic contribution to the scattering of light on damped vibrations which have a quasi-elastic part in their response function. With additional assumption that the vibrations around the boson peak are damped by the same process as the acoustic waves, a good agreement is obtained between acoustic attenuation data and QES spectra in SiO2 and polystyrene both on a qualitative and a quantitative level.

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Quasi-elastic scattering in glasses and its relation to sound absorption

Abstract

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