Molecular dynamics study of collision induced absorption in rare gas liquid mixtures

1984 ◽  
Vol 81 (5) ◽  
pp. 2347-2351 ◽  
Author(s):  
George Birnbaum ◽  
Raymond D. Mountain
Keyword(s):  
Molecular Dynamics ◽  
Liquid Mixtures ◽  
Rare Gas ◽  
Induced Absorption

Vibration-rotation spectra of HCl in rare-gas liquid mixtures: Molecular dynamics simulations of Q-branch absorption

2002 ◽  
Vol 116 (12) ◽  
pp. 5058 ◽  
Author(s):  
A. Medina ◽  
J. M. M. Roco ◽  
A. Calvo Hernández ◽  
S. Velasco ◽  
M. O. Bulanin ◽  
...  
Keyword(s):  
Molecular Dynamics ◽  
Molecular Dynamics Simulations ◽  
Liquid Mixtures ◽  
Rare Gas ◽  
Vibration Rotation ◽  
Dynamics Simulations

Studies in Molecular Dynamics by Collision-Induced Infrared Absorption in H2–Rare Gas Mixtures. II. Diffusional Narrowing of Quadrupole-Induced Transitions

1973 ◽  
Vol 51 (18) ◽  
pp. 1971-1977 ◽  
Author(s):  
J. W. Mactaggart ◽  
J. De Remigis ◽  
H. L. Welsh
Keyword(s):  
Molecular Dynamics ◽  
Infrared Absorption ◽  
Diffusion Coefficients ◽  
Reasonable Agreement ◽  
Liquid Mixtures ◽  
Gas Mixtures ◽  
Rare Gas ◽  
Density Region ◽  
Vapor Line ◽  
High Density Region

The profiles of the quadrupole-induced transitions (S1(0), S1(1)) of the pressure-induced fundamental infrared absorption band of hydrogen are studied in H2–Ar, H2–Kr, and H2–Xe gas mixtures up to high densities a few degrees above the critical temperature of the rare gas and in the corresponding liquid mixtures along the liquid–vapor line. The half-width δq of the transitions remains practically constant for the gas mixtures up to densities of several hundred amagat and then decreases rapidly. Values of δq for the liquid mixtures, when corrected for the temperature difference, are the same as the gas values at the same density. The narrowing of the transitions in the high-density region is interpreted in terms of the diffusional narrowing theory of Zaidi and Van Kranendonk, and is used to calculate diffusion coefficients D12 of H2 molecules in dense rare gas fluids. The results are in reasonable agreement with values of D12 previously deduced from the intercollisional interference effect in the overlap-induced components (Q1(0), Q1(1)) of the same band.

COLLISION-INDUCED ABSORPTION OF COMPRESSED GASES IN THE FAR INFRARED, PART I

1965 ◽  
Vol 43 (5) ◽  
pp. 729-750 ◽  
Author(s):  
D. R. Bosomworth ◽  
H. P. Gush
Keyword(s):  
Fourier Analysis ◽  
Infrared Absorption ◽  
Michelson Interferometer ◽  
Far Infrared ◽  
Gas Mixtures ◽  
Experimental Techniques ◽  
Rare Gas ◽  
Absorption Coefficients ◽  
Induced Absorption ◽  
Separate Paper

A study is being made of the far infrared absorption occurring in compressed rare-gas mixtures, and compressed homonuclear diatomic gases. The region investigated lies between 20 and 400 cm−1. The spectra are obtained from the Fourier analysis of interferograms produced by a dynamic Michelson interferometer. It is possible to obtain accurate absolute absorption coefficients for broad bands using this method provided care is exercised in the analysis of the interferograms. The necessary precautions are discussed in detail. The precision of the method obtained in practice is demonstrated using the far infrared bands of hydrogen and nitrogen as examples. Only the experimental techniques are discussed in this paper; the detailed results follow in a separate paper.

Collision-induced absorption in ethane–rare gas mixtures

1983 ◽  
Vol 61 (4) ◽  
pp. 633-640 ◽  
Author(s):  
I. R. Dagg ◽  
L. A. A. Read ◽  
A. Anderson
Keyword(s):  
Fourier Transform ◽  
Temperature Dependence ◽  
Quadrupole Moment ◽  
Gas Mixtures ◽  
Rare Gas ◽  
Fourier Transform Spectrometer ◽  
Rare Gases ◽  
Induced Absorption ◽  
Absolute Value ◽  
The Absolute

The collision-induced spectra of mixtures of ethane and each of the rare gases He, Ar, Kr, and Xe in the 40–360 cm−1 region have been obtained using a Michelson Fourier transform spectrometer. In addition, the temperature dependence of the absorption in ethane and ethane–xenon mixtures is reported. All results have been analyzed according to the theory for quadrupole induced rotation–translation absorption. The absolute value of the quadrupole moment of ethane is estimated to be less than 1.0 B and most likely less than 0.5 B. Various speculations are made concerning the induction mechanisms (other than quadrupolar) for each of the mixtures.

Far-infrared interaction-induced absorption spectra of CS2C6H6 liquid mixtures

1992 ◽  
Vol 168 (2-3) ◽  
pp. 349-356 ◽  
Author(s):  
Evangelos Zoidis ◽  
Jannis Samios ◽  
Thomas Dorfmüller
Keyword(s):  
Absorption Spectra ◽  
Far Infrared ◽  
Liquid Mixtures ◽  
Induced Absorption

Energy transfer in radiolysis of rare gas-perfluoroethane liquid mixtures

1968 ◽  
Vol 72 (1) ◽  
pp. 253-256 ◽  
Author(s):  
Alicja Sokolowska ◽  
Larry Kevan
Keyword(s):  
Energy Transfer ◽  
Liquid Mixtures ◽  
Rare Gas
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