Rayleigh-Brillouin Scattering in Binary Gas Mixtures
Fluid Dynamics
2015-05-22 v1 Optics
Abstract
Precise measurements are performed on spectral lineshapes of spontaneous Rayleigh-Brillouin scattering in mixtures of the noble gases Ar and Kr, with He. Admixture of a light He atomic fraction results in marked changes of the spectra, although in all experiments He is merely a spectator atom: it affects the relaxation of density fluctuations of the heavy constituent, but its contribution to the scattered light intensity is negligibly small. The results are compared to a theory for the spectral lineshape without adjustable parameters, yielding excellent agreement for the case of binary mono-atomic gases, signifying a step towards modeling and understanding of light scattering in more complex molecular media.
Keywords
Cite
@article{arxiv.1505.05623,
title = {Rayleigh-Brillouin Scattering in Binary Gas Mixtures},
author = {Ziyu Gu and Wim Ubachs and Willem van de Water and Wilson Marques},
journal= {arXiv preprint arXiv:1505.05623},
year = {2015}
}