1. Combustion Research Facility, Sandia National Laboratories, 7011 East Ave, Livermore, California 94550, United States
2. Division of Synchrotron Radiation Research, Lund University, Sölvegatan 14, S-22363 Lund, Sweden
3. Division of Mechanics, Materials and Component Design, Lund University, Ole Römers väg 1, S-22363 Lund, Sweden
4. Combustion Physics, Lund University, Sölvegatan 14, S-22363 Lund, Sweden