Constraining the symmetry energy from fragment yields
1 Cyclotron Institute, Texas A&M University, College Station, TX - 77843, USA
2 LNS-INFN, via Santa Sofia 62, 95123 Catania, Italy
Methods of extraction of the symmetry energy coefficient to temperature ratio from isobaric and isotopic yields of fragments produced in Fermi-energy heavy-ion collisions are discussed. Consistent results are obtained when the hot fragmenting source is well characterized and its excitation energy and isotopic composition are properly taken into account. The results, independent of the mass number of the detected fragments, suggest that their fate is decided very early in the reaction. A comparison to the Statistical Multifragmentation Model (SMM) predictions is also presented.
© Owned by the authors, published by EDP Sciences - SIF, 2012