Work

Detection and quantification of hydroperoxides and radicals within stabilized cool flames by means of SVUV-PEPICO spectroscopy

Year: 2025

Type: article

Abstract: cool flame with a capillary probe and expanded through two consecutive skimmers to reach the synchrotron vacuum ultraviolet-photoelectron photoion coincidence spectrometer. threshold photoelectron spectra (TPES) and total ion yields (TIY) were recorded as a function of the photon energy, and led to the identification of species that have so far never been observed in cool flames, including the only expected keto- or aldo-hydroperoxide (hydroperoxymethylformate), hydrogen peroxide, methyl and hydroperoxyl radicals. The quantification of the detected species has been performed and is compared with the predictions of a kinetic model, demonstrating the validity of the experimental approach and suggesting possible ways for improvement.

Source: Physical Chemistry Chemical Physics

DOI: 10.1039/d5cp00887e