Theoretical and numerical studies of chemisorption on a line with precursor layer diffusion.

We consider a model for random deposition of monomers on a line with extrinsic precursor states. As the adsorbate coverage increases, the system develops nontrivial correlations due to the diffusion mediated deposition mechanism. In a numeric simulation, we study various quantities describing the evolution of the island structure. We propose a simple, self-consistent theory which incorporates pair correlations. The results for the correlations, island density number, average island size and probabilities of island nucleation, growth and coagulation show good agreement with the simulation data. PACS: 05.40.+j, 82.20.Mj arch-ive/9508039 email: [email protected] email: [email protected]