Moments of the rate of nonstationary nucleation.
The zeroth, first, and reduced moments of the rate of nonstationary nucleation at constant supersaturation are parameters in the description of the variation of this rate with time. The dependence of the reduced moment M(r) on the nucleus size n(*) and the supersaturation Deltamu is analyzed and it is found that under typical conditions this moment decreases from about 1.9 to 1.1 with increasing n(*) or, alternatively, decreasing Deltamu. Expressions for the M(r)(n(*)) and M(r)(Deltamu) dependences are given which allow approximate calculation of the reduced moment in different cases of one-component nucleation.
Kashchiev
Dimo
D
Institute of Physical Chemistry, Bulgarian Academy of Sciences, Sofia, Bulgaria.