1. Combustion Physics, Lund University, Sölvegatan 14, S-22363 Lund, Sweden
2. Division of Synchrotron Radiation Research, Lund University, Sölvegatan 14, S-22363 Lund, Sweden
3. Materials Engineering, Lund University, Ole Römers väg 1, S-22363 Lund, Sweden
4. Department of Chemistry, University of Copenhagen, Universitetsparken 5, DK-2100 Copenhagen, Denmark