Production of intermediate mass fragments (IMF) has been studied in semi-peripheral Sn-124 (35 A MeV) + Ni-64 and Sn-112 (35 A MeV) + Ni-58 reactions. Our recently proposed new method of an analysis of the neck-like fragmentation processes that provides information on the IMFs time sequence and time scale is reviewed. Isotopic analysis of so characterized IMFs gives evidence for neutron enrichment of mid-velocity fragments. A clear isoscaling behavior is found despite the short emission time scale. Evolution of the isoscaling parameters from semi-peripheral to central collisions is discussed.
Isoscaling in neck fragmentation / E. De Filippo, F. Amorini, A. Anzalone, L. Auditore, V. Baran, L. Berceanu, J. Blicharska, J. Brzychczyk, B. Borderie, R. Bougault, M. Bruno, G. Cardella, S. Cavallaro, M.B. Chatterjee, A. Chbihi, M. Colonna, M. D'Agostino, R. Dayras, M. Di Toro, J. Frankland, E. Galichet, W. Gawlikowicz, E. Geraci, F. Giustolisi, A. Grzeszczuk, P. Guazzoni, D. Guinet, M. Iacono-Manno, S. Kowalski, E. La Guidara, G. Lanzalone, G. Lanzano, C. Maiolino, Z. Majka, N. Le Neindre, A. Pagano, M. Papa, M. Petrovici, E. Piasecki, S. Pirrone, R. Planeta, G. Politi, A. Pop, F. Porto, M.F. Rivet, E. Rosato, F. Rizzo, S. Russo, P. Russotto, M. Sassi, K. Schmidt, K. Siwek-Wilczynska, I. Skwira, M.L. Sperduto, A. Sochocka, L. Swiderski, A. Trifiro, M. Trimarchi, G. Vannini, G. Verde, M. Vigilante, J.P. Wieleczko, J. Wilczynski, L. Zetta, W. Zipper. - In: ACTA PHYSICA POLONICA B. - ISSN 0587-4254. - B 37:1(2006 Jan), pp. 199-205.
Isoscaling in neck fragmentation
P. Guazzoni;M. Sassi;L. Zetta;
2006
Abstract
Production of intermediate mass fragments (IMF) has been studied in semi-peripheral Sn-124 (35 A MeV) + Ni-64 and Sn-112 (35 A MeV) + Ni-58 reactions. Our recently proposed new method of an analysis of the neck-like fragmentation processes that provides information on the IMFs time sequence and time scale is reviewed. Isotopic analysis of so characterized IMFs gives evidence for neutron enrichment of mid-velocity fragments. A clear isoscaling behavior is found despite the short emission time scale. Evolution of the isoscaling parameters from semi-peripheral to central collisions is discussed.Pubblicazioni consigliate
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