Vibrational relaxation of highly excited diatomics. III. HF(v = 5, 6, 7)+H/sub 2/, D/sub 2/, N/sub 2/, HF, CO/sub 2/, N/sub 2/O, CH/sub 4/, and C/sub 2/H/sub 6/

Journal Article · Fri Oct 01 04:00:00 EDT 1982 · J. Chem. Phys.; (United States)

OSTI ID:7062498

Dzelzkalns, L S; Kaufman, F

Vibrational relaxation rate constants k/sup Q//sub v/ are reported for HF (v = 5, 6, 7) collisions with eight quencher molecules Q = H/sub 2/, D/sub 2/, N/sub 2/, HF, CO/sub 2/, N/sub 2/O, CH/sub 4/, and C/sub 2/H/sub 6/, at 298 K under conditions of rotational equilibrium, using the fast flow infrared chemiluminescence technique. The rates are faster than had been reported by some investigators, the energy transfer probability P/sup Q//sub v/ ranging from P2/sub 5/ = 3.2 x 10/sup -3/ to P/sup HF//sub 7/ = 1.45. The rate constants rise with increasing v, i.e., n = 2.0 to 8.4 for different Q in the v/sup n/ correlation. For all Q except H/sub 2/ and HF, V-V transfer is suggested, but the Lambert--Salter plots have different slopes for different Q. The data are compared with published measurements and with theory, the latter especially for Q = HF.

• Research Organization: Department of Chemistry, University of Pittsburgh, Pittsburgh, Pennsylvania 15260
• OSTI ID: 7062498
• Journal Information: J. Chem. Phys.; (United States), Journal Name: J. Chem. Phys.; (United States) Vol. 77:7; ISSN JCPSA
• Country of Publication: United States
• Language: English

Related Subjects

640304* -- Atomic
Molecular & Chemical Physics-- Collision Phenomena
74 ATOMIC AND MOLECULAR PHYSICS
ALKANES
CARBON COMPOUNDS
CARBON DIOXIDE
CARBON OXIDES
CHALCOGENIDES
COLLISIONS
DEUTERIUM
ELEMENTS
ENERGY LEVELS
ENERGY TRANSFER
ETHANE
EXCITED STATES
HYDROCARBONS
HYDROFLUORIC ACID
HYDROGEN
HYDROGEN COMPOUNDS
HYDROGEN ISOTOPES
INORGANIC ACIDS
ISOTOPES
KINETICS
LIGHT NUCLEI
METHANE
MOLECULE COLLISIONS
MOLECULE-MOLECULE COLLISIONS
NITROGEN
NITROGEN COMPOUNDS
NITROGEN OXIDES
NITROUS OXIDE
NONMETALS
NUCLEI
ODD-ODD NUCLEI
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
RELAXATION
STABLE ISOTOPES
VIBRATIONAL STATES