Coupling of ToF-SIMS and Raman Spectroscopy for the Characterization of the Chemical Species Involved in the Soot Nucleation Process
Résumé
Time-of-flight secondary ion mass spectrometry (ToF-SIMS) and Raman spectroscopy are used to characterize samples extracted from a laboratory methane diffusion flame at different reaction times along the flame axis in order to gain information on the soot nucleation process. Experimental results from the comparison of these techniques allow the chemical characterization of the gas to soot particles phase transition and the quantification of the hydrogen content of the sampled matter. Before soot formation, no phase separation is observed on the samples, while after soot formation, a phase separation appears with two families of PAHs and a difference in the Raman signal.
Domaines
Chimie
Origine : Fichiers produits par l'(les) auteur(s)