Pressure broadening of the dipole and Raman lines of CO/sub 2/ by He and Ar. Temperature dependence

Journal Article · Sun Apr 01 04:00:00 EST 1979 · J. Chem. Phys.; (United States)

OSTI ID:6324602

Pack, R T

Pressure broadening of CO/sub 2/ lines by He and Ar is studied using a priori (electron gas plus van der Waals) potential energy surfaces and infinite-order sudden approximation dynamics. The linewidths of both dipole line (from vibration--rotation transitions) and Raman lines (from pure rotational transitions) are calculated as functions of the temperature over the range 200 to 800 /sup 0/K. The dependence on uncertainties in the potential energy surfaces is also explored. Experimental results are available only at room temperature; agreement of the calculated results with them is good for small rotational quantum numbers j and deviates about as expected for large j. Accurate experimental studies of the temperature dependence of pressure broadening are suggested.

• Research Organization: Theoretical Division, University of California, Los Alamos Scientific Laboratory, Los Alamos, New Mexico 87545
• OSTI ID: 6324602
• Journal Information: J. Chem. Phys.; (United States), Journal Name: J. Chem. Phys.; (United States) Vol. 70:7; ISSN JCPSA
• Country of Publication: United States
• Language: English

Related Subjects

640302* -- Atomic
Molecular & Chemical Physics-- Atomic & Molecular Properties & Theory
74 ATOMIC AND MOLECULAR PHYSICS
ARGON
CALCULATION METHODS
CARBON COMPOUNDS
CARBON DIOXIDE
CARBON DIOXIDE LASERS
CARBON OXIDES
CHALCOGENIDES
CRYOGENIC FLUIDS
DATA
DATA FORMS
ELEMENTS
EXPERIMENTAL DATA
FLUIDS
GAS LASERS
HELIUM
HIGH TEMPERATURE
INFORMATION
ISOLATED VALUES
LASERS
LINE BROADENING
LINE WIDTHS
LOW TEMPERATURE
MEDIUM TEMPERATURE
NONMETALS
NUMERICAL DATA
OXIDES
OXYGEN COMPOUNDS
RAMAN SPECTRA
RARE GASES
SPECTRA
SUDDEN APPROXIMATION
TEMPERATURE DEPENDENCE