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Rotational and vibrational energy distributions of /sup 16/OH(X /sup 2/R) and /sup 18/OH(X /sup 2/R) produced in the reaction of O(/sup 1/D) with H/sub 2/O and H/sub 2/ /sup 18/O

Journal Article · · J. Chem. Phys.; (United States)
OSTI ID:6581901
; ; ;

Laser induced fluorescence measurements of the rotational population distributions for the /sup 16/OH(X /sup 2/R/sub i/, v = 0, 1) products of the reaction of O(/sup 1/D) with H/sub 2/O and the /sup 16/OH(X /sup 2/R/sub i/, v = 0, 1) and /sup 18/OH(X /sup 2/R/sub i/, v = 0, 1) products of the reaction of O(/sup 1/D) with H/sub 2/ /sup 18/O are presented here. The rotational and vibrational distributions of the /sup 16/OH formed in the normal isotopic abundance reactions were found to be close to those expected if the energy of the reaction is statistically distributed amongst all available product states. Isotopic labeling of the oxygen atom in the reactant water molecule demonstrated that the vibrational distribution of the new /sup 16/OH bond formed is significantly more energetic than the remaining /sup 18/OH bond, while the rotational distributions were similar. These results are interpreted as H atom abstraction (or stripping) dynamics predominating over O atom insertion into the water OH bonds.

Research Organization:
Laser Chemistry Group, Chemistry Division, Naval Research Laboratory, Washington, D.C. 20375
OSTI ID:
6581901
Journal Information:
J. Chem. Phys.; (United States), Journal Name: J. Chem. Phys.; (United States) Vol. 74:8; ISSN JCPSA
Country of Publication:
United States
Language:
English

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Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400202* -- Isotope Effects
Isotope Exchange
& Isotope Separation
CHEMICAL REACTIONS
DISTRIBUTION
ELEMENTS
ENERGY
ENERGY LEVELS
EVEN-EVEN NUCLEI
EXCITED STATES
FLUIDS
FLUORESCENCE
GASES
HYDROXYL RADICALS
ISOTOPE EFFECTS
ISOTOPES
LIGHT NUCLEI
LUMINESCENCE
NONMETALS
NUCLEI
OXYGEN
OXYGEN 18
OXYGEN ISOTOPES
RADICALS
ROTATIONAL STATES
STABLE ISOTOPES
VAPORS
VIBRATIONAL STATES
WATER VAPOR