Photolysis of CH3CHO at 248 nm: Evidence of triple fragmentation from primary quantum yield of CH3 and HCO radicals and H atoms

摘要: Radical quantum yields have been measured following the 248 nm photolysis of acetaldehyde, CH3CHO. HCO radical and H atom quantified by time resolved continuous wave Cavity Ring Down Spectroscopy in near infrared their conversion to HO2 radicals reaction with O2. The CH3 yield has determined using same technique into CH3O2. Absolute deduced for atoms through fitting profiles, obtained under various O2 concentrations, a complex model, while relative from CH3I. Time profiles very low concentrations suggest that another unknown forming path exists this system besides can be well reproduced large range experimental conditions yields: CH3CHO + h...