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Kinetic theory of steady chemical nucleation in the gas phase

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Title: Kinetic theory of steady chemical nucleation in the gas phase
Authors: Yamamoto, T. Browse this author
Chigai, T. Browse this author
Watanabe, S. Browse this author
Kozasa, T. Browse this author →KAKEN DB
Keywords: astrochemistry
molecular processes
methods: analytical
Issue Date: 2-Dec-2001
Publisher: EDP Sciences
Journal Title: Astronomy and Astrophysics
Volume: 380
Issue: 1
Start Page: 373
End Page: 383
Publisher DOI: 10.1051/0004-6361:20011391
Abstract: We develop a kinetic theory of nucleation involving chemical reactions in the gas phase. For the basis of deriving the chemical nucleation rate, chemical kinetic considerations are presented on the steady current density and the effective rate constants of the overall reaction, which is a sum of a sequential elementary reactions. We formulate the steady rate of chemical nucleation in a multi-component vapor, in which nucleation occurs via the chemical reactions yielding a condensate having a stoichiometric composition. An exact expression of the steady nucleation rate is given together with its approximate formulas for practical applications. The present formulation is not concerned with any particular cluster model. The supersaturation ratio for a many-component vapor is defined so as to be a natural extension of that for a one-component vapor. It is shown that the transition probabilities due to growth and decay of the clusters are of the same form as the growth and evaporation rates in a one-component vapor.
Rights: © 2001 ESO
Type: article
Appears in Collections:理学院・理学研究院 (Graduate School of Science / Faculty of Science) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 小笹 隆司

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