Cross sections, recoil energy distributions for residues produced by 14N, 2~ 4~ on 1248n targets have been measured in the 10-70 MeV/u intermediate energy range. As the projectile energy increases, processes as complete fusion-evaporation, incomplete fusionevaporation and intranuclear cascade-evaporation participate progressively in the nuclear collisions. Peculiar residues corresponding to a gain of 4, 5 or even 6 protons for the ~2~Sn target have been observed in the 30-50 MeV energy range.