Collison-induced rototranslational absorption spectra of H/sub 2/-He pairs at temperatures from 40 to 3000 K

Journal Article · Tue Mar 01 04:00:00 EST 1988 · Astrophys. J.; (United States)

DOI:https://doi.org/10.1086/166112· OSTI ID:7222312

Borysow, J; Frommhold, L; Birnbaum, G

The zeroth, first, and second spectral moments of the rototranslational collision-induced absorption (RT CIA) spectra of hydrogen-helium mixtures are calculated from the fundamental theory, for temperatures from 40 to 3000 K. With the help of simple analytical functions of three parameters and the information given, the RT CIA spectra of H/sub 2/-He pairs can be generated on computers of small capacity, with rms deviations from exact quantum profiles of not more than a few percent. Such representations of the CIA spectra are of interest for work related to the atmospheres of the outer planets and cool stars. The theoretical spectra are in close agreement with existing laboratory measurements at various temperatures from about 77 to 3000 K. 28 references.

• Research Organization: Texas Univ., Austin (USA); NBS, Gaithersburg, MD (USA)
• OSTI ID: 7222312
• Journal Information: Astrophys. J.; (United States), Journal Name: Astrophys. J.; (United States) Vol. 326; ISSN ASJOA
• Country of Publication: United States
• Language: English

Related Subjects

640107 -- Astrophysics & Cosmology-- Planetary Phenomena
640302* -- Atomic
Molecular & Chemical Physics-- Atomic & Molecular Properties & Theory
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
74 ATOMIC AND MOLECULAR PHYSICS
ABSORPTION SPECTRA
ATMOSPHERES
DISPERSIONS
ELECTROMAGNETIC RADIATION
ELEMENTS
FAR INFRARED RADIATION
FLUIDS
GASES
HELIUM
HIGH TEMPERATURE
HYDROGEN
INFRARED RADIATION
MIXTURES
NONMETALS
PLANETARY ATMOSPHERES
RADIATIONS
RARE GASES
SPECTRA
SPECTROSCOPY