Electromagnetic Sssion cross sections of a 120 MeV/nucleon U beam incident on Sve targets, Be, Al, " 'Cu, " 'Ag, and " U, have been extracted from measurements of projectile velocity fission fragments. The nuclear interaction contributions to the experimentally observed cross sections were determined by extrapolation from the Be target data using a geometrical scaling model and by an empirical decomposition of the fission charge distributions. The results are compared to model calculations in which electric quadrupole excitations have been included. PACS number(s): 25.70.Jj
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