Physisorption Kinetics from Mean-Field Theory: Compensation Effect near Monolayer Coverage
- 5 July 1982
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 49 (1), 61-64
- https://doi.org/10.1103/physrevlett.49.61
Abstract
Based on a set of nonlinear rate equations with phonon-mediated transition rates calculated from mean field theory, the coverage-dependent isothermal desorption time for on graphite up to a coverage of 1.5 adlayers is determined. Prefactors in the Arrhenius parametrization drop by 2 orders of magnitude as the heat of adsorption decreases for increasing coverage, establishing a compensation effect in physisorption kinetics.
Keywords
This publication has 9 references indexed in Scilit:
- Mean-field theory of multilayer physisorption. Adsorbate densities and surface potentialsPhysical Review B, 1982
- Desorption times from rate equations, the master equation, and the Fokker-Planck equationPhysical Review B, 1981
- Physisorption kinetics and equilibrium properties of gas-solid systems approaching monolayer coverageSurface Science, 1981
- Desorption by phonon cascades for gas-solid systems with many physisorbed surface bound statesPhysical Review B, 1980
- Adsorption of bromine on the reconstructed Au(100) surface: LEED, thermal desorption and work function measurementsSurface Science, 1980
- Interaction between a He atom and a graphite surfaceSurface Science, 1980
- An example of “fast” desorption: Anomalously high pre-exponentials for CO desorption from Ru (001)Chemical Physics Letters, 1978
- Thermal desorption of metals from tungsten single crystal surfacesSurface Science, 1975
- Measurement of Lifetimes and Binding Energies of Atoms Adsorbed on Surfaces at Low Temperatures by a Rapid-Flash-Desorption TechniquePhysical Review Letters, 1973