Fission study for the system84Kr+232Th at 25, 35 and 45 MeV/u

Recoil velocities of heavy residues produced in the bombardment of⁸⁴Kr beams on a²³²Th target at energies about the Fermi velocity were determined using the method of correlations between fission fragments. The masses of both fragments were also measured. The data show events with high recoil velocity which are produced in incomplete fusion processes. Estimates of the energy transfer are given. Comparisons with incomplete fusion data obtained with other projectiles in the same incident velocity range show an increase of the energy transfer with the mass of the projectile.