Abstract

Photodissociation dynamics of o-bromofluorobenzene in the 234-267 nm range has been experimentally investigated using the DC-slice velocity map imaging technique. It is found that Br(2P3/2) atoms produced from repulsive singlet state surfaces via excitation of one or more 1ππ* excited states dominate the Br photofragments. The quantum yield of spin-orbit excited Br(2P1/2) atoms was found to be only ∼0.02, indicating weak spin-orbit couplings in the low-lying electronic states of o-bromofluorobenzene.

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