https://doi.org/10.1051/epjconf/20146603032
Probing the symmetry energy at low density using observable from neck fragmentation
1 INFN Sez. di Catania, Italy
2 INFN, Laboratori Nazionali del Sud, Catania, Italy
3 INFN, Gruppo coll. di Messina and Dip. di Fisica, Università di Messina, Italy
4 Physics Faculty, University of Bucharest, Romania
5 National Institute of Physics and Nuclear Engineering “Horia Hulubei”, Bucharest, Romania
6 Faculty of Physics and Heavy Ion Laboratory, University of Warsaw, Poland
7 Dipartimento di Fisica e Astronomia, Univ. di Catania, Italy
8 Institute of Physics, University of Silesia, Katowice, Poland
9 INFN, Sezione di Milano and Dipartimento di Fisica, Univ. di Milano, Italy
10 “Kore” Università, Enna, Italy
11 INFN, Sezione di Napoli and Dipartimento di Fisica, Univ. di Napoli, Italy
12 National Centre for Nuclear Research, Otwock-Świerk, Poland
13 M. Smoluchowski Inst. of Physics, Jagellonian Univ., Cracow, Poland
a e-mai: defilippo@ct.infn.it
Published online: 20 March 2014
Semi-peripheral collisions of 64Ni + 124Sn in direct and inverse kinematics, at 35 A MeV incident energy, are studied to characterize the dynamical origin and align-ments properties of fragments emission at midrapidity. This emission is partly due to the fragmentation of a transient neck joining the projectile and target in the early stages of the reaction. Recently we exploited observable from neck fragmentation to constraint the density dependence of the symmetry energy. In this contribution we focus on the density evolution of the mid-rapidity source. An experimental survey is suggested to check if data are consistent with the formation of neck fragments in a dilute density region in contact with the projectile-like and target-like spectators at normal saturation density.
© Owned by the authors, published by EDP Sciences, 2014
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 2.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
