Notizen: Kinetic Theory for the Broadening of the Depolarized Rayleigh Line

1969 ◽  
Vol 24 (11) ◽  
pp. 1852-1853
Author(s):  
Siegfried Hess
Keyword(s):  
Kinetic Theory ◽  
Theory Approach ◽  
Rayleigh Line ◽  
Linear Molecules ◽  
Rayleigh Light

Abstract Collisional and diffusional broadening of the depolarized Rayleigh light scattered by a gas of linear molecules are studied by a kinetic theory approach based on the Waldmann-Snider equation.

scholarly journals Spectrum of the Depolarized Rayleigh Light Scattered by Gases of Linear Molecules

1970 ◽  
Vol 25 (3) ◽  
pp. 350-362 ◽  
Author(s):  
Siegfried Hess
Keyword(s):  
Line Width ◽  
Magnetic Relaxation ◽  
Scattering Amplitude ◽  
Collision Term ◽  
Theory Approach ◽  
Molecular Scattering ◽  
Relaxation Measurements ◽  
Linear Molecules ◽  
Relaxation Coefficients ◽  
Rayleigh Light

The spectrum of the depolarized Rayleigh light scattered by a gas of linear molecules is calculated by a kinetic theory approach based on the Waldman-Snider equation. Collisional and diffusional broadening are studied. The line width is related to relaxation coefficients which are collision brackets obtained from the linearized Waldmann-Snider collision term involving the binary molecular scattering amplitude and its adjoint. It is shown under which conditions the relaxation coefficients characterizing the line width can be compared with data obtained from Sentfleben- Beenakker effect and nuclear magnetic relaxation measurements

Depolarized Rayleigh Light Scattering in Molecular Gases. A Comparison between Theory and Experiment

1973 ◽  
Vol 51 (15) ◽  
pp. 1627-1636 ◽  
Author(s):  
F. R. McCourt ◽  
T. Rudensky ◽  
H. Moraal
Keyword(s):  
Light Scattering ◽  
Kinetic Theory ◽  
Half Width ◽  
Rayleigh Line ◽  
Molecular Gases ◽  
Rayleigh Light Scattering ◽  
Experimental Values ◽  
Theory And Experiment ◽  
Rayleigh Light

A modification of the bulk polarization kinetic theory treatment of depolarized Rayleigh light scattering is presented and employed in calculating the half-width of the depolarized Rayleigh line as a function of density for the molecular gases n-H2, n-D2, N2, and CO2. Values of the broadening coefficient of 0.132, 0.131, 1.16, and 3.1 GHz amagat−1 have been calculated for these four gases, to be compared with the experimental values 0.106 ± 0.004, 0.141 ± 0.004, 1.5 ± 0.3, and 2.8 ± 0.3 GHz amagat−1, respectively.

Non-Lorentzian Shape of the Depolarized Rayleigh Line and the Correlation Function of the Tensor Polarization

1973 ◽  
Vol 28 (9) ◽  
pp. 1385-1388
Author(s):  
S. Hess ◽  
H. Vestner
Keyword(s):  
Distribution Function ◽  
Correlation Function ◽  
Rayleigh Line ◽  
Tensor Polarization ◽  
Pressure Broadening ◽  
Exponential Functions ◽  
Linear Molecules ◽  
Lorentzian Shape

The correlation function of the tensor polarization relevant for the depolarized Rayleigh line of a gas of rotating linear molecules is calculated for the pressure broadening regime. Point of depar­ture is the Waldmann-Snider equation for the distribution function of the gas. Due to the collisional coupling between the tensor polarization and other moments of the distribution function the cor­relation function turns out to be a sum of exponential functions. Consequently the depolarized Rayleigh line has a non-Lorentzian shape.

Analysis of binary and ternary granular mixtures behavior using the kinetic theory approach

2005 ◽  
Vol 151 (1-3) ◽  
pp. 117-125 ◽  
Author(s):  
Hadjira Iddir ◽  
Hamid Arastoopour ◽  
Christine M. Hrenya
Keyword(s):  
Kinetic Theory ◽  
Theory Approach ◽  
Granular Mixtures

Kinetic theory approach to twin plane jets turbulent mixing analysis

AIAA Journal ◽  
1988 ◽  
Vol 26 (3) ◽  
pp. 303-310 ◽  
Author(s):  
Zuu-Chang Hong ◽  
Shu-Hao Chuang
Keyword(s):  
Kinetic Theory ◽  
Turbulent Mixing ◽  
Twin Plane ◽  
Theory Approach ◽  
Plane Jets
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