H-2 vibrational spectral signatures in binary and ternary mixtures: theoretical model, simulation and application to CARS thermometry in high pressure flames

A summary of the main results obtained by the two groups in the field of H- 2 vibrational spectral line signatures for various mixtures. in connection with CARS diagnostics of H-2-O-2 combustion systems, is presented. H-2-X Sy stems may have specific large inhomogeneous spectral features, due to the d ependence of the line broadening and line shifting on the (H-2) radiator sp eed, particularly at high temperature. Thus, careful attention has to be pa id to rigorously analyze such features, both from the experimental point of view (Dijon) and from the theoretical one (Besancon). Applications of the present results to high-pressure H-2/air flame thermometry are also briefly described. They present an approach aiming to include the more recent basi c results on coherent Raman line shape in CARS diagnostics. in order to imp rove the accuracy of temperature measurements. (C) 2001 Academie des scienc es/Editions scientifiques et medicales Elsevier SAS.