Energy damping and intermediate-velocity fragment emission in peripheral Kr+Au collisions at 43 MeV/u

Abstract

Triple and four-fold coincidences among fragments have been measured in the reaction ⁸⁴Kr+Au at 43 MeV/u. All events showing the projectile-like nucleus and fission fragments of the target-like nucleus, and all events with one additional intermediate-velocity fragment, were analysed in the frame of a dissipative collision and a participant-spectator model. The mechanism is basically that of a dissipative collision but the emission of the intermediate velocity fragment by the target differs from an equilibrated evaporation.