Abstract
Quantitative measurements have been made of the nucleation and growth kinetics of gold and silver films deposited under ultrahigh vacuum conditions onto alkali halide surfaces cleaved in situ. Nucleation rates, nuclei number densities and nuclei size distributions were measured as functions of time, substrate temperature and vapour atom arrival rate. The results are consistent with the basic theoretical assumptions that the kinetics are controlled primarily through the adatom concentration. Additional evidence suggests that large stable nuclei may be mobile under certain conditions and that this factor should be included in theoretical models of nucleation and growth.
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