Radical reactions in the gas phase

A laser flash photolysis-laser induced fluorescence apparatus (LFP-LIF) (Figure 1) at the Institute for Tropospheric Research allows temperature and pressure dependent investigations of radical gas phase reactions. The radicals are generated by photolysis of a corresponding radical precursor by using a Nd:YAG laser (neodymium-doped yttrium-aluminium-garnet laser) at 355 nm. A second time-displaced laser pulse from a dye laser excites the fluorescence of the created radicals, which are detected by a photomultiplier tube (PMT). This apparatus, e.g. the kinetic of the reactions of alkoxy radicals with molecular oxygen (O2) or nitrogen monoxide (NO) can be investigated.