Initial Stage of Aerosol Formation from Oversaturated Vapors

The formation of aerosol particles from oversaturated vapor was considered assuming that the stable nuclei of the new phase contain two (dimers) or three (trimers) condensing vapor molecules. Exact expressions were derived and analyzed for the partition functions of the dimer and trimer suspended in...

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Bibliographic Details
Published in:Russian Journal of Physical Chemistry A 2018-03, Vol.92 (3), p.613-619
Main Authors: Lushnikov, A. A., Zagainov, V. A., Lyubovtseva, Yu. S.
Format: Article
Language:English
Subjects:
Aerosols
Airborne particulates
Chemistry
Chemistry and Materials Science
Dimers
Molecular clusters
Physical Chemistry
Physical Chemistry of Aerosols
Trimers
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Summary:The formation of aerosol particles from oversaturated vapor was considered assuming that the stable nuclei of the new phase contain two (dimers) or three (trimers) condensing vapor molecules. Exact expressions were derived and analyzed for the partition functions of the dimer and trimer suspended in a carrier gas for the rectangular well and repulsive core intermolecular potentials. The equilibrium properties of these clusters and the nucleation rate of aerosol particles were discussed. The bound states of clusters were introduced using a limitation on their total energy: molecular clusters with a negative total energy were considered to exclude configurations with noninteracting fragments.
ISSN:0036-0244
1531-863X
DOI:10.1134/S0036024418030159