Department of Chemistry
University of Gothenburg
SE-412 96 Göteborg
Sweden

Room: 4235
Phone: +46 31 786 90 73
Fax: +46 31 7723107
E-mail: pan@

Research interests:

Molecules on ice: In our laboratory, we study reactions between molecules on ice surfaces. In the atmosphere such reactions take place, and some of them are very important for the ozon depletion over Antartica. A popular science description of the project, in Swedish, is found here .

Atmospheric nucleation processes : In this project, we study the initial processes leading to nucleation into particles in the troposhere and statosphere. In a Fourier Transform Ion Cyclotron Resonance Mass Spectrometer (FT-ICR MS), the stability of ternary clusters consisting of atmospherically relevant molecules are studied, e.g. H 2 O, NH 3 , H 2 SO 4 , HNO 3 , and organic molecules. A popular science description of the project, in Swedish, is found here .

Selected publications :

• Influence of wintertime boundary layer dynamics on aerosol properties and particle formation in Gothenburg, Sweden. K. Frans G. Olofson, Patrik U. Andersson, Mattias Hallquist, Evert Ljungström, Lin Tang, Deliang Chen, Jan B. C. Pettersson. Atmospheric Environment accepted for publication.

• Isotope exchange and structural rearrangements in reactions between D_O and the size-selected ionic water clusters, H₃O⁺ (H₂O)_n and NH₄⁺ (H₂O)_n. Patrik U. Andersson, Mauritz Ryding, Osamu Sekiguchi, and Einar Uggerud. Physical Chemistry Chemical Physics 10, 6127 (2008).

• Dissociative recombination of fully deuterated protonated acetonitrile, CD₃CND⁺: Product branching fractions, absolute cross sections and thermal rate coefficients. Erik Vigren, Magdalena Kamińska, Mathias Hamberg, Vitali Zhaunerchyk,Richard D. Thomas,Mathias Danielsson, Jacek Semaniak, Patrik U. Andersson, Mats Larsson and Wolf D. Geppert. Physical Chemistry Chemical Physics 10, 4014 (2008).

• Dissociative recombination of water cluster ions with free electrons: cross sections and branching ratios. J. Öjekull, P. U. Andersson, J. B. C. Pettersson, N. Marković, R. D. Thomas, A. Al Khalili, A. Ehlerding, M. Larsson, H. Danared, A. Källberg, F. Österdahl, and M. af Ugglas. Journal of Chemical Physics 128, 044311(2008).            

All publications pdf