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Cluster formation in the atmosphere

The formation of new aerosol particles in our atmosphere is poorly understood and it is suggested that ternary homogeneous nucleation and ion-induced nucleation followed by cluster ion-cluster ion recombination are important processes in forming these particles.

The aim of the present project is to provide a molecular-level understanding of

  • ternary homogeneous nucleation,
  • ion-induced nucleation,
  • cluster ion-cluster ion recombination.


we focus on clusters containing H2O, NH3, H2SO4, and pyridineIn this project, we focus on clusters containing H2O, NH3, H2SO4, and pyridine. These components are believed to be present in the production of clusters in the atmosphere. We are currently studying the reaction kinetics when ammonia reacts with a small size selected cluster of water and pyridine (typically<30 molecules per cluster) at thermal collision energies. The kinetics of this fundamental reaction is studied as a function of cluster size. In addition quantum dynamical calculations of the clusters are performed in cooperation with Prof. Einar Uggerud at University of Oslo.

The project is funded by The Swedish Research Council (VR).

Principal investigator in this project is Jan Pettersson.

Staff within this project

    See the central part of the window for a list of group members in this project.


Page Manager: Katleen Burm|Last update: 4/14/2014

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Utskriftsdatum: 2019-07-21