Sn-124 + Ni-64 and Sn-112 + Ni-58 reactions at 35 A MeV incident energy were studied by using the 688 Si-CsI telescopes of the forward part (1degrees less than or equal to theta(lab) less than or equal to 30degrees) of CHIMERA multi-detector. The most central part, 1% of the total measured cross section was selected by means of a multidimensional analysis of the experimental observables. The detected isotopes of light fragments (3 less than or equal to Z less than or equal to 8) provided information on breakup temperatures of the emitting sources. The space-time structure of these sources was deduced from fragment correlations. An odd-even effect in the fragment production, enhanced by the isospin of the entrance channel, was observed. Freeze-out unbound neutron-to-proton relative densities for both studied reactions have been deduced, indicating for a possible isospin distillation mechanism related to a phenomenon of the liquid-gas phase transition in asymmetric systems. (C) 2003 Elsevier B.V. All rights reserved.
Isoscaling in central Sn-124+Ni-64, Sn-112+Ni-58 collisions at 35 A MeV / E. Geraci, M. Bruno, M. D'Agostino, E. De Filippo, A. Pagano, G. Vannini, M. Alderighi, A. Anzalone, L. Auditore, V. Baran, R. Barna, M. Bartolucci, I. Berceanu, J. Blicharska, A. Bonasera, B. Borderie, R. Bougault, J. Brzychczyk, G. Cardella, S. Cavallaro, A. Chbihi, J. Cibor, M. Colonna, D. De Pasquale, M. Di Toro, F. Giustolisi, A. Grzeszczuk, P. Guazzoni, D. Guinet, M. Iacono-Manno, A. Italiano, S. Kowalski, E. La Guidara, G. Lanzalone, G. Lanzano, N. Le Neindre, S. Li, S. Lo Nigro, C. Maiolino, Z. Majka, G. Manfredi, T. Paduszynski, M. Papa, M. Petrovici, E. Piasecki, S. Pirrone, G. Politi, A. Pop, F. Porto, M.F. Rivet, E. Rosato, S. Russo, P. Russotto, G. Sechi, V. Simion, M.L. Sperduto, J.C. Steckmeyer, A. Trifiro, M. Trimarchi, M. Vigilante, J.P. Wieleczko, J. Wilczynski, H. Wu, Z. Xiao, L. Zetta, W. Zipper. - In: NUCLEAR PHYSICS. A. - ISSN 0375-9474. - A 732:1-4(2004 Feb), pp. 173-201. [10.1016/j.nuclphysa.2003.11.055]
Isoscaling in central Sn-124+Ni-64, Sn-112+Ni-58 collisions at 35 A MeV
P. Guazzoni;L. Zetta;
2004
Abstract
Sn-124 + Ni-64 and Sn-112 + Ni-58 reactions at 35 A MeV incident energy were studied by using the 688 Si-CsI telescopes of the forward part (1degrees less than or equal to theta(lab) less than or equal to 30degrees) of CHIMERA multi-detector. The most central part, 1% of the total measured cross section was selected by means of a multidimensional analysis of the experimental observables. The detected isotopes of light fragments (3 less than or equal to Z less than or equal to 8) provided information on breakup temperatures of the emitting sources. The space-time structure of these sources was deduced from fragment correlations. An odd-even effect in the fragment production, enhanced by the isospin of the entrance channel, was observed. Freeze-out unbound neutron-to-proton relative densities for both studied reactions have been deduced, indicating for a possible isospin distillation mechanism related to a phenomenon of the liquid-gas phase transition in asymmetric systems. (C) 2003 Elsevier B.V. All rights reserved.
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