Resumo

SANDOVAL-VILLALBAZO, A.; SAGACETA-MEJIA, A. R.  e  MONDRAGON-SUAREZ, J. H.. On the existence of the Brillouin peaks in a simple dilute dissipative gas. Rev. mex. fis. [online]. 2022, vol.68, n.4, 041701.  Epub 19-Maio-2023. ISSN 0035-001X.  https://doi.org/10.31349/revmexfis.68.041701.

Light scattering due to the interaction of photons and acoustic waves present in a dilute inert gas is analyzed through the use of irreversible thermodynamics. The dispersion relation, which governs the dynamics of the density fluctuation of the gas allows the establishment of a simple criterion for the corresponding Rayleigh-Brillouin spectrum to be observed. The criterion here proposed allows a clear physical interpretation and suggests generalizations for other interesting physical scenarios.

Palavras-chave : Kinetic theory; Rayleigh-Brillouin.

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