Molecular-beam studies of energy transfer in scattering from crystal surfaces. [OLECULAR BEAMS; MOLECULE-MOLECULE COLLISIONS; MONOCRYSTALS; PLATINUM; SURFACES; ENERGY TRANSFER]

Technical Report · Sat Jan 01 04:00:00 EST 1983

OSTI ID:6414481

Gutherie, W L

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
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201 -- Chemical &amp; Physicochemical Properties
640300* -- Atomic
Molecular &amp; Chemical Physics
74 ATOMIC AND MOLECULAR PHYSICS
BEAMS
CHALCOGENIDES
CHEMICAL REACTION YIELD
CHEMICAL REACTIONS
COLLISIONS
CRYSTALS
DEUTERIUM
ELEMENTS
HEAVY WATER
HYDROGEN COMPOUNDS
HYDROGEN ISOTOPES
ISOTOPES
LIGHT NUCLEI
METALS
MOLECULE COLLISIONS
NITRIC OXIDE
NITROGEN COMPOUNDS
NITROGEN OXIDES
NONMETALS
NUCLEI
ODD-ODD NUCLEI
OXIDES
OXYGEN
OXYGEN COMPOUNDS
PLATINUM METALS
SCATTERING
STABLE ISOTOPES
TRANSITION ELEMENTS
WATER
YIELDS