Role of the Model Dependent Translational Volume Scale in the Classical Theory of Nucleation

摘要: The replacement free energy correction, for vapor phase nucleation, in the classical theory of nucleation (CNT), is investigated within confines renormalized representation molecular system implicit model, based on capillarity approximation adopted by CNT. associated with translational degrees freedom clusters that serve as embryos formation drops, and it shown that, unless extreme care exercised, evaluation this contribution to can involve a redundant counting configurations lead predicted rate error many orders magnitude. It demonstrated problem arises because use coarse grained version actual correction be extremely sensitive type renormalization (model) employed. In case CNT, particular, arise from fact drop used model cluster cannot located more accurately than fluctuation its volume. This fluctuation, effect, generates lattice whose sites restricted occupy parameter cube root volume fluctuation. denial accessibility continuum eliminates counting. form factor derived, discussions various subtle issues are presented, similar problems mentioned connection versions systems other contexts (e.g., cases microemulsions polymers, even such constant pressure ensemble) where does not play role.