Analysis of the shape of the far-infrared spectra of H/sub 2/-H/sub 2/ and H/sub 2/-He collisions

Technical Report · Wed Apr 01 04:00:00 EST 1981

OSTI ID:5911500

Cohen, E R; Birnbaum, G

The collision-induced far-infrared spectra due to H2-H2 and H2-He collisions have been previously measured in the range 20 to 900/cm-1 at -77.4, 194.7, and 292.4 K. These spectra are fitted with a semi-empirical line shape and the parameters in the shape function are evaluated. The accuracy of these fittings is discussed. The zeroth and first spectral moments for the isotropic overlap translational spectrum due to H2-He collisions are obtained and given a value for the range parameter in the induced-dipole function in good agreement with that given by an ab initio calculation.

• Research Organization: National Measurement Lab. (NBS), Washington, DC (USA)
• OSTI ID: 5911500
• Report Number(s): PB-81-210395
• Country of Publication: United States
• Language: English

Related Subjects

640304* -- Atomic
Molecular & Chemical Physics-- Collision Phenomena
74 ATOMIC AND MOLECULAR PHYSICS
ATOM COLLISIONS
ATOM-MOLECULE COLLISIONS
COLLISIONS
ELECTROMAGNETIC RADIATION
ELEMENTS
FAR INFRARED RADIATION
FLUIDS
GASES
HELIUM
HYDROGEN
INFRARED RADIATION
INFRARED SPECTRA
MOLECULE COLLISIONS
MOLECULE-MOLECULE COLLISIONS
NONMETALS
RADIATIONS
RARE GASES
SPECTRA