Rayleigh–Brillouin scattering of gases with internal relaxation

We have measured the light scattering profiles of CO2, N2, C2F6, and C2H6 at 29 °C in both kinetic and hydrodynamic regimes. The generalized theory by Weinberg, Kapral, and Desai was applied for the first time, we believe, to analyze the power spectra of C2F6 and C2H6, for which the Mountain theory was inadequate. We have also observed the rotational relaxation times of C2H6 and C2F6 and the vibrational relaxation time of the latter.

[1]  Edward Roy Pike,et al.  Photon correlation and light beating spectroscopy , 1974 .

[2]  Raymond D. Mountain,et al.  Spectral Distribution of Scattered Light in a Simple Fluid , 1966 .

[3]  C. F. Curtiss,et al.  Molecular Theory Of Gases And Liquids , 1954 .

[4]  G. J. Prangsma,et al.  Ultrasonic determination of the volume viscosity of N2, CO, CH4 and CD4 between 77 and 300 K , 1973 .

[5]  Stuart A. Rice,et al.  Absorption and Dispersion of Ultrasonic Waves , 1960 .

[6]  I. Oppenheim,et al.  Generalized hydrodynamics for dilute gases: The application to light-scattering experiments☆ , 1971 .

[7]  M. Nelkin,et al.  Application of a Kinetic Model to Time-Dependent Density Correlations in Fluids , 1964 .

[8]  R. Kapral,et al.  Light-Scattering Experiments and Generalized Transport Coefficients , 1973 .

[9]  R. Kapral,et al.  Translational hydrodynamics for binary mixtures: Memory from internal molecular relaxation , 1974 .

[10]  T. G. Cowling,et al.  The mathematical theory of non-uniform gases , 1939 .

[11]  C. G. Phillips,et al.  The determination of gaseous densities , 1950, Philosophical Transactions of the Royal Society of London. Series A, Mathematical and Physical Sciences.

[12]  J. Kestin,et al.  Viscosity of Carbon Dioxide in the Temperature Range 25–700°C , 1972 .

[13]  S. Legvold,et al.  Sound Dispersion in Ethane‐Ethylene Mixtures and in Halo‐Ethane Gases , 1962 .

[14]  N. Clark,et al.  Observation of a Frequency-Dependent Thermal Conductivity in a Polyatomic Gas , 1972 .

[15]  S. Yip,et al.  Kinetic Model Analysis of Light Scattering by Molecular Gases , 1967 .

[16]  Mikhail Naumovich Kogan,et al.  Rarefied Gas Dynamics , 1969 .

[17]  J. Deutch,et al.  Light scattering from a binary mixture with internal relaxation , 1973 .

[18]  A. Malinauskas.  Thermal Transpiration. Rotational Relaxation Numbers for Nitrogen and Carbon Dioxide , 1966 .

[19]  R. Bechmann,et al.  Numerical data and functional relationships in science and technology , 1969 .

[20]  C. D. Boley,et al.  Kinetic Models and Brillouin Scattering in a Molecular Gas , 1972 .

[21]  J. Deutch,et al.  Light Scattering from Binary Solutions , 1969 .

[22]  Sidney Yip,et al.  Rayleigh Scattering in Dilute Gases , 1971 .

[23]  C. Boley,et al.  On the Kinetic Model Description of Rayleigh–Brillouin Scattering from Molecular Gases , 1974 .

[24]  E. Carnevale,et al.  Ultrasonic determination of rotational collision numbers and vibrational relaxation times of polyatomic gases at high temperatures. , 1967 .

[25]  R. Mountain.  Thermal Relaxation and Brillouin Scattering in Liquids. , 1966, Journal of research of the National Bureau of Standards. Section A, Physics and chemistry.

[26]  J. D. Lambert,et al.  Vibrational relaxation in gases , 1959, Proceedings of the Royal Society of London. Series A. Mathematical and Physical Sciences.