The Temperature Dependence of Homogeneous Nucleation Rates by the Gradient Theory

0335017 - ÚT 2010 RIV CZ eng C - Conference Paper (international conference)
Hrubý, Jan
The Temperature Dependence of Homogeneous Nucleation Rates by the Gradient Theory.
Nucleation and Atmospheric Aerosol. Praha: Institute of Chemical Process Fundamentals ASCR, v. v. i., Czech Aerosol Society, 2009 - (Smolík, J.; O´Dowd, C.), s. 573-576. ISBN 978-80-02-12161-2.
[International Conference Nucleation and Atmospheric Aerosol /18./. Praha (CZ), 10.08.2009-14.08.2009]
R&D Projects: GA AV ČR IAA200760905
Institutional research plan: CEZ:AV0Z20760514
Keywords : homogeneous nucleation * gradient theory * cahn-hilliard theory
Subject RIV: BJ - Thermodynamics

We demonstrate that the incorrect temperature dependence of the nucleation rates as predicted by the classical nucleation theory is likely a consequence of the ignored dependence of the surface tension on the radius of the droplet parameterized here as a quadratic function of the pressure difference between the gas and liquid phases of the critical cluster. The size-dependent surface tension is obtained using a simplified gradient theory.
Permanent Link: http://hdl.handle.net/11104/0179605