The characteristic time scales of condensation and coagulation in ion-induced nucleation

Laakso, Lauri; Ma¨kela¨, Jyrki M.; Kulmala, Markku
August 2000
AIP Conference Proceedings;2000, Vol. 534 Issue 1, p366
Academic Journal
The characteristic time scales of the condensation, coagulation and recombination during ion-induced nucleation have been investigated. The classical theory for ion-induced nucleation of water and sulfuric acid has been used in these calculations. The effect of the Coulomb potential on coagulation and condensation has also been taken into account. The results show that in certain conditions, with low preexisting particle concentrations and high atmospheric temperatures, the new particles can grow to the sizes they are stable even without electric charge. This system is however very sensitive to changes in preexisting aerosol particle concentration and temperature.


Related Articles

  • Atmospheric new particle formation: real and apparent growth of neutral and charged particles. Leppä, J.; Anttila, T.; Kerminen, V.-M.; Kulmala, M.; Lehtinen, K. E. J. // Atmospheric Chemistry & Physics;2011, Vol. 11 Issue 10, p4939 

    In this study we have provided simple analytical formulae to estimate the growth rate of a nucleation mode due to self-coagulation and the apparent growth rate due to coagulation scavenging by larger particles. These formulae were used on a set of simulations covering a wide range of atmospheric...

  • Analysis of feedbacks between nucleation rate, survival probability and cloud condensation nuclei formation. Westervelt, D. M.; Pierce, J. R.; Adams, P. J. // Atmospheric Chemistry & Physics Discussions;2013, Vol. 13 Issue 12, p32175 

    Aerosol nucleation is an important source of particle number in the atmosphere. However, in order to become cloud condensation nuclei (CCN), freshly nucleated particles must undergo significant condensational growth while avoiding coagulational scavenging. In an effort to quantify the...

  • Analytical prediction of homogeneous nucleation in rapidly expanding pure vapours. Young, J. B.; Huang, L. // AIP Conference Proceedings;2000, Vol. 534 Issue 1, p884 

    The paper describes an analytical method for predicting the maximum vapour subcooling and final droplet number distribution in a rapidly expanding pure vapour undergoing homogeneous nucleation. This type of flow is characterised by very high nucleation rates which are quenched by the release of...

  • Characterization of aerosol particles by their heterogeneous nucleation: Activity at low supersaturations with respect to water and various organic vapors. Holla¨nder, W.; Dunkhorst, W.; Windt, H. // AIP Conference Proceedings;2000, Vol. 534 Issue 1, p732 

    An expansion type cloud condensation nucleus counter/Kelvin spectrometer has been operated with water and various organic liquids. Heterogeneous nucleation is markedly different depending on the particle/vapor material combination.

  • Comments on kinetics and thermodynamics of condensations under homogeneous conditions. Bauer, S. H.; Zhang, Y-.X; Wilcox, C. F. // AIP Conference Proceedings;2000, Vol. 534 Issue 1, p159 

    © 2000 American Institute of Physics.

  • Homogeneous nucleation and shock wave interaction in condensing steam flows. White, A. J.; Young, J. B. // AIP Conference Proceedings;2000, Vol. 534 Issue 1, p888 

    It is well known that the release of latent heat by a homogeneously nucleating steam flow can have a strong effect on the flow dynamics and this is particularly true if the flow is transonic or supersonic with shock waves present. Most research has been aimed at calculating the overall flow...

  • D[sub 2]O-H[sub 2]O condensation in supersonic nozzles. II. Modeling. Heath, Christopher H.; Streletzky, Kiril A.; Wyslouzil, Barbara E.; Wilemski, Gerald // AIP Conference Proceedings;2000, Vol. 534 Issue 1, p63 

    An integral steady state model of nucleation and condensation was used to examine the formation and growth of D[sub 2]O droplets in a supersonic nozzle. The classical nucleation rate expression was used together with isothermal and nonisothermal droplet growth laws. For each experiment, the...

  • Nucleation in condensed systems. Kelton, K. F. // AIP Conference Proceedings;2000, Vol. 534 Issue 1, p386 

    Studies in condensed phases allow the exploration of some aspects of nucleation that are weakly manifest in gas phase condensation. Time-dependent rates that depend strongly on thermal history, competition between long-range diffusion and interfacial processes, and the influence of the...

  • Molecular dynamics studies of evaporation and condensation coefficients in nucleation theory. Schaaf, P.; Senger, B.; Voegel, J.-C.; Bowles, R. K.; Reiss, H. // AIP Conference Proceedings;2000, Vol. 534 Issue 1, p23 

    A rate theory that accounts for multimolecular addition or loss of molecules from a cluster is developed for the homogeneous nucleation of a liquid from its metastable vapor. Molecular dynamics simulations of Lennard-Jones argon are used to study the evaporation coefficients of Stillinger type...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics