Molecular-beam studies of energy transfer in scattering from crystal surfaces. [OLECULAR BEAMS; MOLECULE-MOLECULE COLLISIONS; MONOCRYSTALS; PLATINUM; SURFACES; ENERGY TRANSFER]
Translational energy distributions and angular distributions of D/sub 2/O produced from the reaction of incident D/sub 2/ and O/sub 2/ on (III) Pt were measured using a molecular beam-surface scattering apparatus and a time-of-flight spectrometer. Results are discussed in terms of nonequilibrium desorption model. A two-photon ionization spectrometer was built to investigate the internal rotational and vibrational energy distributions of NO scattered from Pt(III) surfaces. Significant energy transfer was observed in all three modes of translation, rotation and vibration. The translational energy of the scattered NO was found to be in equilibrium with the surface for T/sub s/ < 900 K and for incident beam energies of 0.046 and 0.11 eV. The vibrational and rotational energy distributions were found to deviate from equilibrium distributions. These deviations appear to be dynamic effects in the desorption process.
- Research Organization:
- Lawrence Berkeley Lab., CA (USA)
- DOE Contract Number:
- AC03-76SF00098
- OSTI ID:
- 6414481
- Report Number(s):
- LBL-15516; ON: DE83009095
- Resource Relation:
- Other Information: Portions are illegible in microfiche products. Thesis
- Country of Publication:
- United States
- Language:
- English
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37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
DEUTERIUM
CHEMICAL REACTIONS
HEAVY WATER
CHEMICAL REACTION YIELD
OXYGEN
NITRIC OXIDE
SCATTERING
BEAMS
CHALCOGENIDES
COLLISIONS
CRYSTALS
ELEMENTS
HYDROGEN COMPOUNDS
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NONMETALS
NUCLEI
ODD-ODD NUCLEI
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OXYGEN COMPOUNDS
PLATINUM METALS
STABLE ISOTOPES
TRANSITION ELEMENTS
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640300* - Atomic
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400201 - Chemical & Physicochemical Properties