Coherent Rayleigh-Brillouin scattering

influence of the intermolecular potential

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

Research output: Chapter in Book/Report/Conference proceedingChapter (peer-reviewed)

9 Citations (Scopus)
79 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
Title of host publicationProceedings of the 29th International Symposium on Rarefied Gas Dynamics
Pages648-652
Number of pages5
Volume1628
DOIs
Publication statusPublished - 9 Dec 2014
Event29th International Symposium on Rarefied Gas Dynamics - Hilton Xi’an Hotel, Xi'an, China
Duration: 13 Jul 201418 Jul 2014

Publication series

NameAIP Conference Proceedings Series
PublisherAmerican Institute of Physics
Volume1628
ISSN (Print)0094-243X

Conference

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

Fingerprint

Brillouin scattering
Rayleigh scattering
Knudsen flow
scattering
Kinetics
rarefied gases
Boltzmann equation
spectral methods
kinetics
Gases
line shape
gases

Keywords

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

Cite this

Wu, L., White, C., Scanlon, T., Reese, J., & Zhang, Y. (2014). Coherent Rayleigh-Brillouin scattering: influence of the intermolecular potential. In Proceedings of the 29th International Symposium on Rarefied Gas Dynamics (Vol. 1628, pp. 648-652). (AIP Conference Proceedings Series; Vol. 1628). https://doi.org/10.1063/1.4902654
Wu, Lei ; White, Craig ; Scanlon, Thomas ; Reese, Jason ; Zhang, Yonghao. / Coherent Rayleigh-Brillouin scattering : influence of the intermolecular potential. Proceedings of the 29th International Symposium on Rarefied Gas Dynamics. Vol. 1628 2014. pp. 648-652 (AIP Conference Proceedings Series).
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Wu, L, White, C, Scanlon, T, Reese, J & Zhang, Y 2014, Coherent Rayleigh-Brillouin scattering: influence of the intermolecular potential. in Proceedings of the 29th International Symposium on Rarefied Gas Dynamics. vol. 1628, AIP Conference Proceedings Series, vol. 1628, pp. 648-652, 29th International Symposium on Rarefied Gas Dynamics, Xi'an, China, 13/07/14. https://doi.org/10.1063/1.4902654

Coherent Rayleigh-Brillouin scattering : influence of the intermolecular potential. / Wu, Lei; White, Craig; Scanlon, Thomas; Reese, Jason; Zhang, Yonghao.

Proceedings of the 29th International Symposium on Rarefied Gas Dynamics. Vol. 1628 2014. p. 648-652 (AIP Conference Proceedings Series; Vol. 1628).

Research output: Chapter in Book/Report/Conference proceedingChapter (peer-reviewed)

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AU - Wu, Lei

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AU - Scanlon, Thomas

AU - Reese, Jason

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PY - 2014/12/9

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N2 - 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.

AB - 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.

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Wu L, White C, Scanlon T, Reese J, Zhang Y. Coherent Rayleigh-Brillouin scattering: influence of the intermolecular potential. In Proceedings of the 29th International Symposium on Rarefied Gas Dynamics. Vol. 1628. 2014. p. 648-652. (AIP Conference Proceedings Series). https://doi.org/10.1063/1.4902654