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arXiv 1603.09583cond-mat.stat-mechphysics.chem-ph
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对“揭示成核过程中的”压力效应“”一文的评论

Comment on "Unraveling the 'Pressure Effect' in Nucleation"

Vincent Holten, J. Hrubý, M. E. H. van Dongen, D. M. J. Smeulders

摘要:

在2008年的一封信中,Wedekind等人讨论了惰性载气对汽液成核速率的影响。他们发现了一个额外的“压力-体积功”,这是对载气进行的,也量化了载气产生的非等温效应。我们认为,压力-体积功项代表载气对相平衡本身的影响。当使用适用于高压成核的过饱和定义时,该术语不会明确出现。

英文摘要:

In a 2008 Letter, Wedekind et al. discussed the influence of an inert carrier gas on the vapor-liquid nucleation rate. They found an additional "pressure-volume work" that is performed against the carrier gas, and also quantified the nonisothermal effects arising from the carrier gas. We argue that the pressure-volume work term represents the influence of the carrier gas on phase equilibrium itself. This term will not appear explicitly when a definition of the supersaturation is used that is appropriate for high-pressure nucleation.

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