355 nm Photodissociation of NO Revealed by Velocity-Mapped Ion Imaging.

Dinitrogen trioxide is proposed as a precursor to forming nitrous acid, an important source of hydroxyl radicals in the atmosphere. The spectroscopy and properties of NO have been studied at high pressures or low temperatures, but there are no reports of its gas-phase photodissociation. This study investigates the 355 nm photodissociation of NO in a DC-sliced velocity-mapped ion imaging apparatus using linearly polarized nanosecond pump and probe lasers.