Classical stochastic diffusion theory for desorption of atoms and molecules from solid surfaces
Journal Article
·
· Phys. Rev. Lett.; (United States)
A theory of desorption of atoms and molecules from solid surfaces based on a classical stochastic diffusion formulation is presented. A simple rate expression is obtained which has the form R = (..cap omega../sub 0//2..pi..)f(T)exp(-D/sub e//kT), where ..cap omega../sub 0/ is the surface-adsorbate vibrational frequency, f(T) = 1 for atoms, and for molecules f(T) depends on the parameters for the frustrated rotations at the surface. This theory has been applied to the desorption of both atoms and molecules and excellent agreement with experiment is obtained.
- Research Organization:
- Arthur Amos Noyes Laboratory of Chemical Physics, California Institute of Technology, Pasadena, California 91125
- DOE Contract Number:
- AM03-76SF00767; AT03-80ER10608
- OSTI ID:
- 5684380
- Journal Information:
- Phys. Rev. Lett.; (United States), Journal Name: Phys. Rev. Lett.; (United States) Vol. 49:25; ISSN PRLTA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
36 MATERIALS SCIENCE
360104 -- Metals & Alloys-- Physical Properties
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
656000 -- Condensed Matter Physics
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ALKALI METALS
CARBON COMPOUNDS
CARBON MONOXIDE
CARBON OXIDES
CHALCOGENIDES
CORRELATIONS
COUPLINGS
DATA
DESORPTION
DIFFUSION
ELEMENTS
ENERGY LEVELS
EXCITED STATES
EXPERIMENTAL DATA
FLUIDS
GASES
INFORMATION
METALS
NONMETALS
NUMERICAL DATA
OXIDES
OXYGEN COMPOUNDS
POTASSIUM
POTENTIALS
RARE GASES
SORPTIVE PROPERTIES
STOCHASTIC PROCESSES
SURFACE PROPERTIES
THEORETICAL DATA
TRANSITION ELEMENTS
TUNGSTEN
VIBRATIONAL STATES
XENON
360104 -- Metals & Alloys-- Physical Properties
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
656000 -- Condensed Matter Physics
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ALKALI METALS
CARBON COMPOUNDS
CARBON MONOXIDE
CARBON OXIDES
CHALCOGENIDES
CORRELATIONS
COUPLINGS
DATA
DESORPTION
DIFFUSION
ELEMENTS
ENERGY LEVELS
EXCITED STATES
EXPERIMENTAL DATA
FLUIDS
GASES
INFORMATION
METALS
NONMETALS
NUMERICAL DATA
OXIDES
OXYGEN COMPOUNDS
POTASSIUM
POTENTIALS
RARE GASES
SORPTIVE PROPERTIES
STOCHASTIC PROCESSES
SURFACE PROPERTIES
THEORETICAL DATA
TRANSITION ELEMENTS
TUNGSTEN
VIBRATIONAL STATES
XENON