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14th Workshop on Nuclear Physics Marie and Pierre Curie Large Scale Collective Motion, Kazimierz Dolny : Poland (2007)
Re-separation modes of $^{197}$Au + $^{197}$Au system at sub-Fermi energies
J. Wilczynski, I. Skwira-Chalot, K. Siwek-Wilczynska, W. Gawlikowicz, J. Lukasik, F. Amorini1, A. Anzalone1, L. Auditore, V. Baran1, J. Brzychczyk, G. Cardella, S. Cavallaro, M.B. Chatterjee, M. Colonna1, E. De Filippo2, M. Di Toro1, A. Grzeszczuk, P. Guazzoni, S. Kowalski, E. La Guidara E.1, G. Lanzano2, G. Lanzalone1, C. Maiolino1, Z. Majka, N.G. Nicolis, A. Pagano2, E.I Piaseck, S. Pirrone2, R. Planeta, G. Politi2, F. Porto1, F. Rizzo1, P. Russotto1, K. Schmidt, A. Sochocka, L. Swiderski, A. Trifiro, M. Trimarchi, J.P. Wieleczko3, L. Zetta4, W. Zipper

Collisions of a very heavy nuclear system, 197Au + 197Au, 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.
1 :  LNS - Laboratori Nazionali del Sud
2 :  INFN, Sezione di Catania - Istituto Nazionale di Fisica Nucleare, Sezione di Catania
3 :  GANIL - Grand Accélérateur National d'Ions Lourds
4 :  INFN, Sezione di Milano - Istituto Nazionale di Fisica Nucleare, Sezione di Milano
Physique/Physique Nucléaire Expérimentale