Ion angular distributions in electron stimulated desorption: oxygen and CO on W(111). Technical report
Technical Report
·
OSTI ID:7140112
The ion angular distributions resulting from electron stimulated desorption (ESD) of oxygen and carbon monoxide chemisorbed on a tungsten (111) crystal have been determined. The O/sup +/ ions released during ESD of adsorbed oxygen exhibit three-fold symmetric angular distributions in orientational registry with the W(111) substrate. The CO/sup +/ and O/sup +/ ions released during ESD of a monolayer of CO are desorbed normal to the (111) surface. Models for both oxygen and CO adsorption are discussed. The data for CO are consistent with adsorption of CO in 'standing up' carbonyl structures in the virgin and alpha CO binding states. (Author) (GRA)
- Research Organization:
- National Bureau of Standards, Washington, D.C. (USA)
- OSTI ID:
- 7140112
- Report Number(s):
- AD-A-020524
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
36 MATERIALS SCIENCE
360104* -- Metals & Alloys-- Physical Properties
ADSORPTION
ANGULAR DISTRIBUTION
BEAMS
CARBON COMPOUNDS
CARBON MONOXIDE
CARBON OXIDES
CHALCOGENIDES
CHEMICAL REACTIONS
CHEMISORPTION
CRYOGENIC FLUIDS
DESORPTION
DISTRIBUTION
ELECTRON BEAMS
ELEMENTS
FLUIDS
LEPTON BEAMS
METALS
NONMETALS
OXIDES
OXYGEN
OXYGEN COMPOUNDS
PARTICLE BEAMS
REFRACTORY METALS
SEPARATION PROCESSES
SORPTION
SORPTIVE PROPERTIES
SURFACE PROPERTIES
TRANSITION ELEMENTS
TUNGSTEN
360104* -- Metals & Alloys-- Physical Properties
ADSORPTION
ANGULAR DISTRIBUTION
BEAMS
CARBON COMPOUNDS
CARBON MONOXIDE
CARBON OXIDES
CHALCOGENIDES
CHEMICAL REACTIONS
CHEMISORPTION
CRYOGENIC FLUIDS
DESORPTION
DISTRIBUTION
ELECTRON BEAMS
ELEMENTS
FLUIDS
LEPTON BEAMS
METALS
NONMETALS
OXIDES
OXYGEN
OXYGEN COMPOUNDS
PARTICLE BEAMS
REFRACTORY METALS
SEPARATION PROCESSES
SORPTION
SORPTIVE PROPERTIES
SURFACE PROPERTIES
TRANSITION ELEMENTS
TUNGSTEN