Finally, the initial growth processes on Li(100) and Na(100) are investigated utilising kMC simulations within the developed multi-scale model. kMC is a stochastic method for largescale simulations to describe the evolution of a system over time. The system's dynamics are described by hops on the potential energy surface from one local minimum to a neighbouring one. In this process, the previously developed and validated reactive force field potential is used to generate the required rate catalogue. The latter provides the activation energies E a and pre-exponential factors k 0 to determine the reaction rates of viable diffusion processes.