[en] Reactions of the 50-MeVu La beam have been studied. By choosing a range of target masses, the mechanisms can be studied over a broad range of excitation energies. These studies focus in the intermediate mass fragments (IMF's) with Z > 2 emitted in these reactions. Reactions with a carbon target show a component consistent with sequential emission from an equilibrated source. After correcting for light particle evaporation, a compound Z of /approximately/60 is obtained, with linear momentum transfers of /approximately/50% and excitation energies of /approximately/250 MeV. Reactions with an Al target still show a component of compound nucleus decay, with a clear correlation between coincident IMF's. The sum charge distribution for two-body coincident events is very narrow and peaked at Z = 50. The transition to a Cu target is striking in that the correlation goes away, and the Z₁-Z₂ coincidence plot shows a broad range of sum charges peaking around Z = 40, indicating greater than two-body decays. Reactions with the La target give much lighter IMF's, with their Z₁-Z₂ sum charge distribution weighted to Z < 30 10 refs., 13 figs., 1 tab