UV MULTIPHOTON DISSOCIATION OF SBBR3

SbBr3 molecules in the gas phase were dissociated by 193 and 248 nm la ser radiation. The fluorescence was dispersed by a monochromator. High ly excited atomic levels of Sb were found to be significantly populate d for three- or four-photon dissociation. A region of continuous fluor escence in the visible range around 550 nm was attributed to the diato mic SbBr radical resulting from a two-photon dissociation. Only weak l ines of atomic bromine, but from high levels, were found. A broad weak continuous fluorescence in the UV remains unassigned.