Temperature, pressure, and perturber dependencies of line-mixing effects in CO2 infrared spectra. III. Second order rotational angular momentum relaxation and Coriolis effects in Π←Σ bands

1999 ◽  
Vol 110 (16) ◽  
pp. 7733-7744 ◽  
Author(s):  
J.-M. Hartmann ◽  
R. Rodrigues ◽  
Nguyen-Van-Thanh ◽  
C. Brodbeck ◽  
C. Boulet ◽  
...  
Keyword(s):  
Angular Momentum ◽  
Infrared Spectra ◽  
Second Order ◽  
Coriolis Effects ◽  
Mixing Effects ◽  
Line Mixing ◽  
Momentum Relaxation ◽  
Rotational Angular Momentum

Temperature, pressure, and perturber dependencies of line-mixing effects in CO2 infrared spectra. I. Σ←Π Q branches

1997 ◽  
Vol 107 (11) ◽  
pp. 4118-4132 ◽  
Author(s):  
R. Rodrigues ◽  
B. Khalil ◽  
R. Le Doucen ◽  
L. Bonamy ◽  
J.-M. Hartmann
Keyword(s):  
Infrared Spectra ◽  
Mixing Effects ◽  
Line Mixing

The effect of collisions on the rotational angular momentum of diatomic molecules studied using polarized light

2020 ◽  
Vol 153 (18) ◽  
pp. 184310
Author(s):  
P. T. Arndt ◽  
J. Huennekens ◽  
C. Packard ◽  
V. Tran ◽  
J. Carey ◽  
...  
Keyword(s):  
Angular Momentum ◽  
Diatomic Molecules ◽  
Polarized Light ◽  
Rotational Angular Momentum

Estimation of line parameters under line mixing effects: the ν3 band of CH4 in helium

2001 ◽  
Vol 69 (2) ◽  
pp. 189-204 ◽  
Author(s):  
I.M Grigoriev ◽  
N.N Filippov ◽  
M.V Tonkov ◽  
T Gabard ◽  
R Le Doucen
Keyword(s):  
Mixing Effects ◽  
Line Mixing

Waldmann-Snider Collision Integrals and Nonspherical Molecular Interaction. I. Collision Integrals for Pure Gases

1974 ◽  
Vol 29 (12) ◽  
pp. 1705-1716 ◽  
Author(s):  
W. E. Köhler
Keyword(s):  
Angular Momentum ◽  
Cross Sections ◽  
Molecular Interaction ◽  
Scattering Amplitude ◽  
Collision Operator ◽  
Positive Definiteness ◽  
Collision Integrals ◽  
General Properties ◽  
Relaxation Coefficients ◽  
Rotational Angular Momentum

Collision integrals of the linearized Waldmann-Snider collision operator for pure gases are defined. General properties due to invariances of the molecular interaction are discussed. Effective cross sections are introduced and expressed in terms of convenient bracket symbols. The positive definiteness of the relaxation coefficients is proved. The approximation of small nonsphericity for the scattering amplitude is explained and consequences for the collision integrals are investigated. Molecular cross sections describing the orientation and reorientation of the molecular rotational angular momentum are defined. Expressions for effective cross sections relevant for the various nonequilibrium alignment phenomena are presented.

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