Direct Determination of the Rate Constant for the Reaction CH2 + O2 with a LMR‐Spectrometer

The reaction magnified image was studied at room temperature in an isothermal discharge flow system. CH2‐radicals were produced either in a microwave discharge of CH2CO highly diluted in Helium or via the reaction O + CH2CO → CH2 + CO2. The CH2‐concentration was measured by laser magnetic resonance. From the pseudo first order decay of CH2 in the presence of a large excess of oxygen the rate constant for reaction (1) was found to be magnified image