Vibrational energy exchange between H/sub 2/(v=1) and D/sub 2/, N/sub 2/, HCl, and CO/sub 2/

Journal Article · Mon Nov 15 04:00:00 EST 1976 · J. Chem. Phys.; (United States)

OSTI ID:7350781

Bott, J F

The vibrational relaxation of H/sub 2/(v=1) by D/sub 2/, N/sub 2/, HCl, and CO/sub 2/ was studied at 295degreeK by a laser-induced fluorescence technique. HF added in small quantities to the gas mixtures and vibrationally excited by a pulsed HF TEA laser produced H/sub 2/(v=1) by V--V transfer; HF also served as the tracer for H/sub 2/(v=1). The results were interpreted to be primarily V--V rates; the values being (1.25 +- 0.15) x 10/sup -3/, (3.14 +- 0.4) x 10/sup -4/, (2.1 +- 0.3) x 10/sup -6/, and (4.4 +- 0.9) x 10/sup -4/(..mu..sec Torr)/sup -1/ for H/sub 2/(v=1) transfer to HCl, D/sub 2/, N/sub 2/, and CO/sub 2/, respectively. The data for D/sub 2/ and N/sub 2/ were correlated with the V--V exchange probabilities for other diatom--diatom collisions by the parameter ..mu../sup 1///sup 2/..delta..E, where ..mu.. is the reduced mass of the collision partners and ..delta..E the energy mismatch. This parameter also correlates V--V exchange probabilities for CO/sub 2/--diatom collisions. A separate correlation of V--V exchange probabilities for hydrogen halide--homonuclear diatom collisions was obtained by plotting the probabilities versus ..delta..E/h..nu... (AIP)

• Research Organization: The Aerospace Corporation, El Segundo, California 90009
• OSTI ID: 7350781
• Journal Information: J. Chem. Phys.; (United States), Journal Name: J. Chem. Phys.; (United States) Vol. 65:10; ISSN JCPSA
• Country of Publication: United States
• Language: English

Related Subjects

640302* -- Atomic
Molecular & Chemical Physics-- Atomic & Molecular Properties & Theory
640304 -- Atomic
Molecular & Chemical Physics-- Collision Phenomena
74 ATOMIC AND MOLECULAR PHYSICS
CARBON COMPOUNDS
CARBON DIOXIDE
CARBON OXIDES
CHALCOGENIDES
COLLISIONS
CRYOGENIC FLUIDS
DEUTERIUM
ELECTROMAGNETIC RADIATION
ELEMENTS
ENERGY LEVELS
ENERGY TRANSFER
EXCITED STATES
FLUIDS
FLUORESCENCE
HYDROCHLORIC ACID
HYDROGEN
HYDROGEN COMPOUNDS
HYDROGEN ISOTOPES
INORGANIC ACIDS
ISOTOPES
LASER RADIATION
LIGHT NUCLEI
LUMINESCENCE
MOLECULE COLLISIONS
MOLECULE-MOLECULE COLLISIONS
NITROGEN
NONMETALS
NUCLEI
ODD-ODD NUCLEI
OXIDES
OXYGEN COMPOUNDS
RADIATIONS
STABLE ISOTOPES
VIBRATIONAL STATES