Abstract
It is shown that discrepancies between current nucleation theory and experimental results for incomplete condensation can be surmounted if dimers and trimers are assumed to be highly mobile on the substrate surface so that most of them are captured by larger clusters. This new conception of nucleation kinetics can be described by a system of rate equations for which approximate analytical solutions are given. A peculiar feature of these solutions is the dependence of the nucleus density on a root of the deposition time. The results are compared with experimental data for gold on NaCl; in spite of some open questions the agreement is fairly good.
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