Re-separation modes of 197Au+197Au system at sub-Fermi energies

Wilczynski, J.; SKWIRA CHALOT, I.; SIWEK WILCZYNSKA, K.; Gawlikowicz, W.; Lukasik, J.; Amorini, F.; Anzalone, A.; Auditore, Lucrezia; Baran, V.; Brzychczyk, J.; Cardella, G.; Cavallaro, S.; Chatterjeee, M. B.; Chbihi, A.; Colonna, M.; DE FILIPPO, E.; DI TORO, M.; Grzeszczuk, A.; Guazzoni, P.; Kowalski, S.; Laguidara, E.; Lanzalone, G.; Lanzanò, G.; Maiolino, C.; Majka, Z.; Nicolis, N. G.; Pagano, A.; Piasecki, E.; Pirrone, S.; Planeta, R.; Politi, Giuseppe; Porto, F.; Rizzo, Francesca; Russotto, P.; Schmidt, K.; Sochocka, A.; Swiderski,; Trifiro, A.; Trimarchi, M.; Wieleczko, J. P.; Zetta, L.; Zipper, W.

doi:10.1142/S0218301308009537

Collisions of a very heavy nuclear system, Au-197 + Au-197, were studied at the energy of 15 MeV/nucleon with the aim to identify and investigate main macroscopic modes of reseparation 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.