Coherent Rayleigh-Brillouin scattering: influence of the intermolecular potential

Lei Wu, Craig White, Thomas Scanlon, Jason Reese, Yonghao Zhang

Research output: Contribution to conferencePaper

13 Citations (Scopus)
63 Downloads (Pure)

Abstract

The spectrum of the coherent Rayleigh-Brillouin scattering (CRBS) of light by a rarefied gas is obtained by solving the Boltzmann equation numerically using the fast spectral method. The influence of the intermolecular potential on the CRBS spectrum is investigated and the accuracy of the prevailing Tenti’s s6 kinetic model is evaluated. Our numerical results show that i) the intermolecular potential has a great influence on CRBS spectrum when the Knudsen number is between 0.05 and 1 and ii) Tenti’s s6 kinetic model can only predict the line shape accurately for Maxwell gases at small Knudsen numbers.
Original languageEnglish
Number of pages5
Publication statusPublished - 13 Jul 2014
Event29th International Symposium on Rarefied Gas Dynamics - Hilton Xi’an Hotel, Xi'an, China
Duration: 13 Jul 201418 Jul 2014

Conference

Conference29th International Symposium on Rarefied Gas Dynamics
CountryChina
CityXi'an
Period13/07/1418/07/14

Keywords

  • coherent Rayleigh-Brillouin scattering
  • Boltzmann equation
  • fast spectral method

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