OPTIMAL-CONTROL OF IBR CURVE-CROSSING REACTIONS

Control of IBr photodissociation branching ratios is explored using op timal control theory to design the requisite pulses which produce grou nd or spin-orbit excited bromine atoms. To conform to experimental pul se shaping limitations, these pulses are confined to a limited bandwid th and further modified by inspection of the power spectra from which extraneous frequency components are removed. Branching ratios using th e filtered fields are shown to still provide appreciable selectivity, but with the added benefit of more feasible pulse shapes.