Symmetry energy dependence of light fragment production in heavy-ion collisions
1 Fac. of Physics, University of Munich, D-85748 Garching, Germany
2 Smith College, Northampton, MA 01063, USA
3 INFN-Laboratori Nazionali del Sud, I-95123, Catania, Italy
Published online: 24 April 2015
The pre-equilibrium light cluster emission in low to intermediate energy heavy ion collisions is a way to obtain information about the density and momentum dependence of the nuclear symmetry potential, i.e. about the stiffness of the symmetry energy and the neutron-proton effective mass splitting. We study the n/p and t/3He ratios as a function of the energy of the emitted particles and find that these allow to disentangle these two aspects of the symmetry energy. The t/3He ratios are found to carry similar information as the n/p ratios, making this a promising option for experimental investigations. More n-rich systems enhance the sensitivity to the symmetry energy, while double ratios between n-rich and n-poor systems tend to reduce it.
© Owned by the authors, published by EDP Sciences - SIF, 2015
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