Vibrational relaxation HF (v=3,4) by H/sub 2/, D/sub 2/, and CO/sub 2/

Journal Article · Thu Feb 15 04:00:00 EST 1979 · J. Chem. Phys.; (United States)

OSTI ID:6335759

Douglas, D J; Moore, C B

The vibrational relaxation of HF (v=3, 4) in H/sub 2/, D/sub 2/, and CO/sub 2/ has been studied by pumping HF directly from v=0 to v=4. The relaxation rates at 293 +- 2 K of HF (v=3) and HF (v=4) were found to be k/sup 3//sub T/(H/sub 2/) = (3.1 +- 0.6) x 10/sup -13/ and k/sup 4//sub T/(H/sub 2/) = (4.7 +- 1.2) x 10/sup -13/ in H/sub 2/, k/sup 3//sub T/(D/sub 2/) = (1.34 +- 0.26) x 10/sup -12/ and k/sup 4//sub T/(D/sub 2/) = (3.34 +- 0.60) x 10/sup -12/ in D/sub 2/, and k/sup 3//sub T/(CO/sub 2/) = (1.01 +- 0.16) x 10/sup -11/ and k/sup 4//sub T/(CO/sub 2/) = (2.25 +- 0.43) x /sup -10/ in CO/sub 2/ respectively, all in cm/sup 3/ molecule/sup -1/ s/sup -1/. The observed relaxation rate for HF(v=4) in CO/sub 2/ did not depend on the rotational state which was initially excited for J=0--5.

• Research Organization: Department of Chemistry, University of California, Berkeley, California 94720 and Materials and Molecular Research Division of the Lawrence Berkeley Laboratory, University of California, Berkeley, California 94720
• OSTI ID: 6335759
• Journal Information: J. Chem. Phys.; (United States), Journal Name: J. Chem. Phys.; (United States) Vol. 70:4; ISSN JCPSA
• Country of Publication: United States
• Language: English

Related Subjects

640304* -- Atomic
Molecular & Chemical Physics-- Collision Phenomena
74 ATOMIC AND MOLECULAR PHYSICS
CARBON COMPOUNDS
CARBON DIOXIDE
CARBON OXIDES
CHALCOGENIDES
COLLISIONS
CRYOGENIC FLUIDS
DEUTERIUM
ELEMENTS
ENERGY LEVELS
ENERGY-LEVEL TRANSITIONS
EXCITED STATES
FLUIDS
HYDROFLUORIC ACID
HYDROGEN
HYDROGEN COMPOUNDS
HYDROGEN ISOTOPES
INORGANIC ACIDS
ISOTOPES
LIGHT NUCLEI
MOLECULE COLLISIONS
MOLECULE-MOLECULE COLLISIONS
NONMETALS
NUCLEI
ODD-ODD NUCLEI
OXIDES
OXYGEN COMPOUNDS
RELAXATION
STABLE ISOTOPES
VIBRATIONAL STATES