Publication Date:
2011-08-19
Description:
Measurements are reported of the critical supersaturation necessary to initiate the vapor phase nucleation of silver over the ambient temperature range 500-950 K at total pressures of 250 and 500 torr of hydrogen. The results are compared with the predictions of both classical nucleation theory and the theory of a physical spinodal developed by Rasmussen (1982), neither of which adequately describes the present observations. The nucleation of silver appears to be dependent on the total pressure of the system in a manner which suggests that three-body reactions are necessary in order to form the initial silver cluster (e.g., dimers) from the monoatomic vapor.
Keywords:
INORGANIC AND PHYSICAL CHEMISTRY
Type:
Journal of Chemical Physics (ISSN 0021-9606); 85; 1116-112
Format:
text
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