Abstract
A new model for the description of adsorption and desorption processes at the surface is proposed. The lattice gas version of the model is compared with other existing models. The lattice gas and the Potts model approaches to the surface kinetics are examined. Mean-field analysis of the kinetic Potts model is used to study the rates of isothermal and flash desorption processes. The change in the character of desorption with the phase transitions in the adatom layer is shown.
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