Sensitivity of N/Z ratio in projectile break-up of isobaric systems
1 INFN, Sezione di Catania, Catania, Italy
2 INFN - Laboratori Nazionali del Sud, Catania, Italy
3 INFN, Gruppo Collegato di Messina and Univ. of Messina, Italy
4 Physics Faculty, University of Bucharest, Romania
5 Faculty of Physics and Heavy Ion Laboratory, Univ. of Warsaw, Poland
6 INFN, Sezione di Napoli and Dip. di Fisica, Univ. of Napoli, Italy
7 Università “Kore”, Enna, Italy
8 Departamento de Fisica Aplicada, Huelva, Spain
9 Dipartimento di Fisica e Astronomia, Univ. di Catania, Italy
10 National Centre for Nuclear Research, Otwock-Świerk, Poland
Published online: 11 May 2016
The binary break-up of projectile-like fragments in non central heavy-ion collisions follows different decay patterns, from equilibrated emission towards dynamical (prompt) fission. Recently, comparing two systems with different N/Z in the entrance channel, it has been shown that the dynamical emission cross-section is enhanced for the most neutron rich system while the statistical emission cross-section is independent from the isotopic composition. In order to understand this dependence and disentangle it from the initial size of the nuclei, we have studied the two isobaric systems 124Xe+64 Zn and 124Xe+64 Ni at 35 A MeV (InKiIsSy experiment), in comparison with the previous studied reactions (124Sn +64 Ni and 112Sn +58 Ni) at the same bombarding energy. We present the first results evidencing a striking similar effect in the dynamical decay as a function of the N/Z of the target for equal size systems.
© Owned by the authors, published by EDP Sciences - SIF, 2016
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