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· Both the Gibbs function barrier
to stable nucleus formation, ΔG*,
and the radius of this critical nucleus, r*, depend on the
degree of cooling below the phase equilibrium temperature, TE.
· As (TE - T) goes to
zero, both parameters go to infinity.
· As
(TE - T) goes to TE , i.e. T goes to zero,
{TE /(TE - T)} goes to unity.
· The effect of the variation in ΔG* is particularly important because it appears
exponentially in the Boltzmann
probability of acquiring this energy from the
thermal
fluctuations of the sample.
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