Vibration--rotation line shifts for /sup 1/. sigma. /sub g//sup +/ H/sub 2/ (v, J)--/sup 1/S/sub 0/ He computed via close coupling: temperature dependence
Journal Article
·
· J. Chem. Phys.; (United States)
OSTI ID:5123338
The density-shifting of vibration--rotation transitions of H/sub 2/ perturbed by He was computed (as a function of temperature) with no adjustable parameters. The calculation was carried out using the framework of the impact theory of Baranger with S-matrix elements obtained via close-coupling calculations which incorporated the ab initio H/sub 2/--He system potential of Tsapline, Kutzelnigg, Raczkowski, and Lester (Chem. Phys. Lett. 47, 45 (1977)). Vibrational and rotational inelasticity were neglected in the calculations; nevertheless good agreement with experimental data was obtained, up to moderate temperatures, for the density shift. A much poorer comparison was obtained for the density broadening.
- Research Organization:
- Ames Research Center, NASA, Moffett Field, California 94035
- OSTI ID:
- 5123338
- Journal Information:
- J. Chem. Phys.; (United States), Journal Name: J. Chem. Phys.; (United States) Vol. 73:7; ISSN JCPSA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
640302* -- Atomic
Molecular & Chemical Physics-- Atomic & Molecular Properties & Theory
74 ATOMIC AND MOLECULAR PHYSICS
ELEMENTS
ENERGY LEVELS
ENERGY-LEVEL TRANSITIONS
EXCITED STATES
HELIUM
HYDROGEN
LINE BROADENING
NONMETALS
RARE GASES
ROTATIONAL STATES
SPECTRAL SHIFT
TEMPERATURE DEPENDENCE
VIBRATIONAL STATES
Molecular & Chemical Physics-- Atomic & Molecular Properties & Theory
74 ATOMIC AND MOLECULAR PHYSICS
ELEMENTS
ENERGY LEVELS
ENERGY-LEVEL TRANSITIONS
EXCITED STATES
HELIUM
HYDROGEN
LINE BROADENING
NONMETALS
RARE GASES
ROTATIONAL STATES
SPECTRAL SHIFT
TEMPERATURE DEPENDENCE
VIBRATIONAL STATES