Kinetic Monte Carlo simulation event types

For each configuration of molecules at the surface, there are a number of possible events. The events occur randomly with a characteristic rate for each type of configuration. This model is the kinetic Monte Carlo simulation. 

Kinetic Monte Carlo (MC) methods are also useful [208], but one needs to have a fairly complete idea of the physics and chemistry of the problem to apply them. For example, the types of possible events and the probability of occurrence of each event must be known, before the time evolution of the process can be simulated. MC can address much longer time scales compared to MD (e.g., diflfusional or adsorption time scales). Combinations of MD and MC may be useful in simulating the range of time scales from atomic vibrations to surface chemical reactions. 

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