A new reaction mechanism of violent reseparation of a heavy nucleus-nucleus system, 197Au þ 197Au, into three or four massive fragments in collisions at 15 MeV=nucleon has been observed. After reseparation, the fragments are almost exactly aligned, thus showing a very short time scale of the reseparation process, of about 70–80 fm=c.
Fast ternary and quaternary breakup of the 197Au þ 197Au system in collisions at 15 MeV=nucleon / I. Skwira-Chalot, K. Siwek-Wilczyn´ska, J. Wilczyn´ski, F. Amorini, A. Anzalone, L. Auditore, V. Baran, J. Brzychczyk, G. Cardella, S. Cavallaro, M. B. Chatterjee, M. Colonna, E. De Filippo, M. Di Toro, W. Gawlikowicz, E. Geraci, A. Grzeszczuk, P. Guazzoni, S. Kowalski, E. La Guidara, G. Lanzalone, G. Lanzano` , J. Łukasik, C. Maiolino, Z. Majka, N. G. Nicolis, A. Pagano, E. Piasecki, S. Pirrone, R. Płaneta, G. Politi, F. Porto, F. Rizzo, P. Russotto, K. Schmidt, A. Sochocka, Ł. S ´ widerski, A. Trifiro`, M. Trimarchi, J. P. Wieleczko, L. Zetta, W. Zipper. - In: PHYSICAL REVIEW LETTERS. - ISSN 0031-9007. - 101:26(2008 Dec 31), pp. 262701.262701-1-262701.262701-5.
Fast ternary and quaternary breakup of the 197Au þ 197Au system in collisions at 15 MeV=nucleon
P. Guazzoni;L. ZettaPenultimo
;
2008
Abstract
A new reaction mechanism of violent reseparation of a heavy nucleus-nucleus system, 197Au þ 197Au, into three or four massive fragments in collisions at 15 MeV=nucleon has been observed. After reseparation, the fragments are almost exactly aligned, thus showing a very short time scale of the reseparation process, of about 70–80 fm=c.
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