A quasiharmonic model calculation for two non‐Markovian far‐infrared spectra of diatomic polar molecules in a rare‐gas liquid. I. Spectral theory

1987 ◽  
Vol 86 (8) ◽  
pp. 4597-4606 ◽  
Author(s):  
A. Calvo Hernández ◽  
S. Velasco ◽  
F. Mauricio
Keyword(s):  
Model Calculation ◽  
Spectral Theory ◽  
Infrared Spectra ◽  
Far Infrared ◽  
Rare Gas ◽  
Polar Molecules ◽  
Far Infrared Spectra

Infrared spectra of diatomic polar molecules in rare‐gas liquids. I. Spectral theory

1989 ◽  
Vol 91 (6) ◽  
pp. 3435-3442 ◽  
Author(s):  
J. Pérez ◽  
D. Luis ◽  
A. Calvo Hernández ◽  
S. Velasco
Keyword(s):  
Spectral Theory ◽  
Infrared Spectra ◽  
Rare Gas ◽  
Polar Molecules

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

1965 ◽  
Vol 43 (5) ◽  
pp. 751-769 ◽  
Author(s):  
D. R. Bosomworth ◽  
H. P. Gush
Keyword(s):  
Infrared Spectra ◽  
Room Temperature ◽  
Broad Band ◽  
Far Infrared ◽  
Gas Mixtures ◽  
Frequency Region ◽  
Rare Gas ◽  
Induced Absorption ◽  
Far Infrared Spectra ◽  
Zero Frequency

The induced spectra of compressed helium–argon and neon–argon mixtures, and of compressed hydrogen, nitrogen, and oxygen have been measured in the frequency region 20 to 400 cm−1. The far-infrared spectra consist of a translational branch and a rotational branch which overlap, except in the rare-gas mixtures where only the translational component exists. The latter is a broad band which extends from zero frequency to about 500 cm−1, with a maximum near 150 cm−1 in the room-temperature gas. In the case of hydrogen the translational branch is readily distinguished from the rotational branch because it lies at a lower frequency than the latter. In the case of oxygen and nitrogen the spacing between the rotational lines is small and the translational and rotational branches overlap completely.

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