Vibrational relaxation of O/sub 3/ by He, D/sub 2/ and H/sub 2/
Journal Article
·
· J. Chem. Phys.; (United States)
OSTI ID:5471547
The rate constants for the vibrational relaxation of O/sub 3/ by He, D/sub 2/, n-H/sub 2/, and p-H/sub 2/ were measured over the temperature range 164 to 413 K. Visible chemiluminescence from the laser enhanced reaction NO+O/sub 3/(001) was used to monitor the decay of vibrationally excited ozone. D/sub 2/ was found to relax O/sub 3/ more efficiently than He, with the ratio of relaxation probabilities P/sub D2//P/sub He/ varying inversely with temperature. n-H/sub 2/ relaxed O/sub 3/ more efficiently than p-H/sub 2/, with P/sub n/-H2/P/sub p/-H2 increasing with temperature. Also P/sub p/-H2/P/sub D2/ was found to be insensitive to temperature, having a value of 4 +- 1. The data are compared with a semiclassical model which takes into account both VT and VR interactions. The variation of P/sub D2//P/sub He/ appears to be due to D/sub 2/ rotation. The behavior of P/sub n/-H2/P/sub p/-H2 can be explained by a near-resonant VR transition occurring only with o-H/sub 2/. The P/sub p/-H2/P/sub D2/ ratio appears to be simply a mass effect, and can be accounted for with a VT model.
- Research Organization:
- Department of Chemistry, University of Illinois at Chicago Circle, Chicago, Illinois 60680
- OSTI ID:
- 5471547
- Journal Information:
- J. Chem. Phys.; (United States), Journal Name: J. Chem. Phys.; (United States) Vol. 72:7; ISSN JCPSA
- Country of Publication:
- United States
- Language:
- English
Similar Records
Vibrational relaxation of O/sub 3/ by H/sub 2/O and D/sub 2/O
Selective adsorption resonances in the scattering of n-H/sub 2/, p-H/sub 2/, n-D/sub 2/, and o-D/sub 2/ from Ag(111). Technical report
Determination of the rate constants for relaxation of vibrationally excited diatomic homonuclear molecules (H/sub 2/, D/sub 2/, and N/sub 2/) in the case of collisions with H/sub 2/O, D/sub 2/O, and CO/sub 2/
Journal Article
·
Sat Jan 31 23:00:00 EST 1981
· J. Chem. Phys.; (United States)
·
OSTI ID:6836269
Selective adsorption resonances in the scattering of n-H/sub 2/, p-H/sub 2/, n-D/sub 2/, and o-D/sub 2/ from Ag(111). Technical report
Technical Report
·
Sun Dec 11 23:00:00 EST 1983
·
OSTI ID:6028406
Determination of the rate constants for relaxation of vibrationally excited diatomic homonuclear molecules (H/sub 2/, D/sub 2/, and N/sub 2/) in the case of collisions with H/sub 2/O, D/sub 2/O, and CO/sub 2/
Journal Article
·
Wed Sep 01 00:00:00 EDT 1982
· Kinet. Catal. (Engl. Transl.); (United States)
·
OSTI ID:6449757
Related Subjects
640302* -- Atomic
Molecular & Chemical Physics-- Atomic & Molecular Properties & Theory
74 ATOMIC AND MOLECULAR PHYSICS
ATOM COLLISIONS
ATOM-MOLECULE COLLISIONS
CHEMILUMINESCENCE
COLLISIONS
CRYOGENIC FLUIDS
DEUTERIUM
ELEMENTS
ENERGY LEVELS
ENERGY TRANSFER
ENERGY-LEVEL TRANSITIONS
EXCITED STATES
FLUIDS
HELIUM
HYDROGEN
HYDROGEN ISOTOPES
ISOTOPES
KINETICS
LIGHT NUCLEI
LOW TEMPERATURE
LUMINESCENCE
MEDIUM TEMPERATURE
MOLECULE COLLISIONS
MOLECULE-MOLECULE COLLISIONS
NONMETALS
NUCLEI
ODD-ODD NUCLEI
OZONE
RARE GASES
RELAXATION
STABLE ISOTOPES
TEMPERATURE DEPENDENCE
VIBRATIONAL STATES
Molecular & Chemical Physics-- Atomic & Molecular Properties & Theory
74 ATOMIC AND MOLECULAR PHYSICS
ATOM COLLISIONS
ATOM-MOLECULE COLLISIONS
CHEMILUMINESCENCE
COLLISIONS
CRYOGENIC FLUIDS
DEUTERIUM
ELEMENTS
ENERGY LEVELS
ENERGY TRANSFER
ENERGY-LEVEL TRANSITIONS
EXCITED STATES
FLUIDS
HELIUM
HYDROGEN
HYDROGEN ISOTOPES
ISOTOPES
KINETICS
LIGHT NUCLEI
LOW TEMPERATURE
LUMINESCENCE
MEDIUM TEMPERATURE
MOLECULE COLLISIONS
MOLECULE-MOLECULE COLLISIONS
NONMETALS
NUCLEI
ODD-ODD NUCLEI
OZONE
RARE GASES
RELAXATION
STABLE ISOTOPES
TEMPERATURE DEPENDENCE
VIBRATIONAL STATES