Nucleus properties studied via Heavy Ion Collisions with the CHIMERA detector
One of the most interesting goals of the intermediate energy heavy ion research is to probe the properties of the nuclei under extreme conditions of density and temperature. The decay of the hot and compressed system formed in the collision can give information on the basic properties of the equation of state (EOS) of the nuclear matter. Moreover, the availability of Radioactive Ion Beams, with N/Z ratio very far from the stability valley, opened a new domain of research allowing to study the different effects of isotopic degree of freedom on the properties of nuclear matter. Due to the occurrence of different reaction mechanisms and to the large number of reaction products a complete experimental investigation needs an event by event analysis with an accurate determination of the primary properties of the decaying system.
The CHIMERA (Charged Heavy Ion Mass and Energy Resolving Array) device is a 4π array for charged particles with high granularity and large coverage of the solid angle, dedicated to the study of heavy-ion reactions at Fermi energies and successfully operating at the LNS from 2003 in its full configuration.
During these years different experimental campaigns were carried out by using stable beams and also radioactive ion beams delivered by the FRIBs facility at the LNS, following different research lines. Among them we can found the search for Isospin Effects on Formation and Decay Mechanism of Compound Nuclei, the study of Dynamical Effects on Nuclear Reactions, the search for Dynamical Fission, the study of Structure of Weakly Bound Light Nuclei.
Apart from these experimental campaigns, in these years an intense R&D activity has been carried out in order to improve the identification performances of the device, thus opening new possibilities in the field of heavy ions reactions with stable and radiactive beams at lower energy.