[1] Univ Bremen, Engn Thermodynam, D-28359 Bremen, Germany
[2] Univ Siegen, Inst Engn Thermodynam, D-57076 Siegen, Germany
[3] Univ Duisburg Essen, Inst Combust & Gas Dynam React Fluids, D-47057 Duisburg, Germany
[4] Univ Littoral Cote dOpale, Lab PhysicoChim Atmosphere, F-59140 Dunkerque, France
[5] Spectral Energies LLC, Beavercreek, OH 45430 USA
[6] German Aerosp Ctr DLR, Dept Combust Diagnost, D-70569 Stuttgart, Germany