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Kinetics of heterogeneous nucleation for low mean cluster populations

Bhatt, JS; Ford, IJ; (2003) Kinetics of heterogeneous nucleation for low mean cluster populations. Journal of Chemical Physics , 118 (7) 3166 - 3176. 10.1063/1.1538605. Green open access

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Abstract

The process of nucleation is normally described using rate equations for the mean populations of molecular clusters. This approach can be justified for cases where these mean populations are large. However, it may be unsuitable in the case of heterogeneous nucleation on small particles if the mean populations are of the order of unity or less. In such a case, considering the average populations might be erroneous since the statistical fluctuations in the molecular populations should be taken into account. Here a stochastic treatment of heterogeneous nucleation kinetics is presented that is described by a set of master equations, and a modified expression for the nucleation rate has been deduced. Furthermore, a numerical method for solving the stochastic system has been examined, and the results show that the rate of nucleation can differ greatly from that obtained with the traditional kinetics. (C) 2003 American Institute of Physics.

Type: Article
Title: Kinetics of heterogeneous nucleation for low mean cluster populations
Open access status: An open access version is available from UCL Discovery
DOI: 10.1063/1.1538605
Publisher version: http://dx.doi.org/10.1063/1.1538605
Language: English
Additional information: Copyright 2003 AIP Publishing. This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing. The following article appeared in Bhatt, JS; Ford, IJ; (2003) Kinetics of heterogeneous nucleation for low mean cluster populations. Journal of Chemical Physics , 118 (7) 3166 - 3176, and may be found at http://dx.doi.org/10.1063/1.1538605.
Keywords: Aerosol-particles, systems, water, ice
UCL classification: UCL
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Physics and Astronomy
URI: https://discovery.ucl.ac.uk/id/eprint/66613
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