Coherent Rayleigh-Brillouin scattering: influence of the intermolecular potential

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

Research output: Contribution to conferencePaper

9 Citations (Scopus)

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.

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. Paper presented at 29th International Symposium on Rarefied Gas Dynamics, Xi'an, China.
Wu, Lei ; White, Craig ; Scanlon, Thomas ; Reese, Jason ; Zhang, Yonghao. / Coherent Rayleigh-Brillouin scattering : influence of the intermolecular potential. Paper presented at 29th International Symposium on Rarefied Gas Dynamics, Xi'an, China.5 p.
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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.",
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author = "Lei Wu and Craig White and Thomas Scanlon and Jason Reese and Yonghao Zhang",
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note = "29th International Symposium on Rarefied Gas Dynamics ; Conference date: 13-07-2014 Through 18-07-2014",

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Wu, L, White, C, Scanlon, T, Reese, J & Zhang, Y 2014, 'Coherent Rayleigh-Brillouin scattering: influence of the intermolecular potential' Paper presented at 29th International Symposium on Rarefied Gas Dynamics, Xi'an, China, 13/07/14 - 18/07/14, .

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

2014. Paper presented at 29th International Symposium on Rarefied Gas Dynamics, Xi'an, China.

Research output: Contribution to conferencePaper

TY - CONF

T1 - Coherent Rayleigh-Brillouin scattering

T2 - influence of the intermolecular potential

AU - Wu, Lei

AU - White, Craig

AU - Scanlon, Thomas

AU - Reese, Jason

AU - Zhang, Yonghao

PY - 2014/7/13

Y1 - 2014/7/13

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.

KW - coherent Rayleigh-Brillouin scattering

KW - Boltzmann equation

KW - fast spectral method

UR - http://rgd29.org/?page_id=956

M3 - Paper

ER -

Wu L, White C, Scanlon T, Reese J, Zhang Y. Coherent Rayleigh-Brillouin scattering: influence of the intermolecular potential. 2014. Paper presented at 29th International Symposium on Rarefied Gas Dynamics, Xi'an, China.