On the existence of the Brillouin peaks in a simple dilute dissipative gas

• A. Sandoval-Villalbazo ^[1] ; A.R. Sagaceta-Mejía ^[1] ; J.H. Mondragón-Suárez ^[1]
  1. [1] Universidad Iberoamericana

     Universidad Iberoamericana

     México

     
• Localización: Revista Mexicana de Física, ISSN-e 0035-001X, Vol. 68, Nº. 4, 2022, págs. 761-764
• Idioma: inglés
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• Resumen

  • Light scattering due to the interaction of photons and acoustic waves present in a dilute inert gas is analyzed through the use of irreversiblet hermodynamics. 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.