Angle-resolved and variable impact energy electron vibrational excitation spectroscopy of molecules adsorbed on surfaces
Journal Article
·
· J. Vac. Sci. Technol.; (United States)
Discrete energy losses occur when a beam of low energy electrons (<30 eV) is scattered from surfaces. For a gas--solid interface, inelastic scattering can occur through excitation of molecular vibrations. Chemical identification, molecular structures and bonding sites can be inferred from the energies of the characteristic losses. The angle and impact energy dependence of the mode intensity can give additional information which in many cases further elucidates the bonding. A consistent picture of the vibrational excitation mechanisms is derived which leads to the identification of helpful selection rules. Discussion will center on the simplest chemical adsorbate of H on W(100) and Ni(111). The application of the basic ideas to diatomic and polyatomic adsorbates will be mentioned briefly.
- Research Organization:
- Department of Physics, University of Pennsylvania, Philadelphia, Pennsylvania 19104
- OSTI ID:
- 5469882
- Journal Information:
- J. Vac. Sci. Technol.; (United States), Journal Name: J. Vac. Sci. Technol.; (United States) Vol. 17:1; ISSN JVSTA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
36 MATERIALS SCIENCE
360202* -- Ceramics
Cermets
& Refractories-- Structure & Phase Studies
ADSORPTION
BEAMS
CRYOGENIC FLUIDS
ELECTRON BEAMS
ELECTRON-PHONON COUPLING
ELEMENTS
ENERGY LEVELS
ENERGY LOSSES
ENERGY RANGE
EV RANGE
EV RANGE 10-100
EXCITED STATES
FLUIDS
GASES
HYDROGEN
INTERFACES
LEPTON BEAMS
LOSSES
LOW TEMPERATURE
MEDIUM TEMPERATURE
METALS
MOLECULES
NICKEL
NONMETALS
PARTICLE BEAMS
REFRACTORY METALS
SCATTERING
SELECTION RULES
SORPTION
SPECTROSCOPY
SURFACES
TRANSITION ELEMENTS
TUNGSTEN
VIBRATIONAL STATES
360202* -- Ceramics
Cermets
& Refractories-- Structure & Phase Studies
ADSORPTION
BEAMS
CRYOGENIC FLUIDS
ELECTRON BEAMS
ELECTRON-PHONON COUPLING
ELEMENTS
ENERGY LEVELS
ENERGY LOSSES
ENERGY RANGE
EV RANGE
EV RANGE 10-100
EXCITED STATES
FLUIDS
GASES
HYDROGEN
INTERFACES
LEPTON BEAMS
LOSSES
LOW TEMPERATURE
MEDIUM TEMPERATURE
METALS
MOLECULES
NICKEL
NONMETALS
PARTICLE BEAMS
REFRACTORY METALS
SCATTERING
SELECTION RULES
SORPTION
SPECTROSCOPY
SURFACES
TRANSITION ELEMENTS
TUNGSTEN
VIBRATIONAL STATES