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Modulation of the nucleation rate preexponential in a low-temperature Ising system
Vitaly A Shneidman1, Gelu M Nita
1Department of Physics, New Jersey Institute of Technology, Newark, New Jersey 07102, USA.
Physical Review Letters
|July 5, 2002
Abstract:
A metastable lattice gas with nearest-neighbor interactions and continuous-time dynamics is studied using a generalized Becker-Döring approach in the multidimensional space of cluster configurations. The preexponential of the metastable-state lifetime (inverse of nucleation rate) is found to exhibit distinct peaks at integer values of the inverse supersaturation. Peaks are unobservable (infinitely narrow) in the strict limit T-->0, but become detectable and eventually dominate at higher temperatures.