RE-SEPARATION MODES OF ¹⁹⁷<font>Au</font> + ¹⁹⁷<font>Au</font> SYSTEM AT SUB-FERMI ENERGIES

Abstract

Collisions of a very heavy nuclear system, 197 Au + 197 Au , were studied at the energy of 15 MeV/nucleon with the aim to identify and investigate main macroscopic modes of re-separation of such a heavy nuclear system. The experiment was performed at the INFN LNS laboratory in Catania by using the multidetector array CHIMERA. Along with binary strongly damped collisions, a strong component of a new re-separation mode: the "fast ternary fission" in characteristic nearly co-linear configuration was observed and the time scale of this process was determined.