Symmetry Energy Dependence of Light Fragment Production in Heavy Ion Collisions

Wolter, H. H.; Zielinska-Pfabe, M.; Decowski, P.; Colonna, M.; Bougault, R. und Chbihi, A. (2014): Symmetry Energy Dependence of Light Fragment Production in Heavy Ion Collisions. In: inpc 2013 - International Nuclear Physics Conference, Vol. 1, Bd. 66, 03097

Abstract

We study the pre-equilibrium light cluster emission in low to intermediate energy heavy ion collisions in transport simulations as a means to obtain information about the density and momentum dependence of the nuclear symmetry potential, i.e. about the asy-stiffness and the neutron-proton effective mass splitting of the symmetry energy. We find that the study of n/p and t/He-3 ratios as a function of the energy of the emitted particles may allow to disentangle these two behaviors The t/He-3 ratios appear 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. A preliminary comparison to experimental data for the Xe-136, Xe-124 + (124, 112) Sn systems is also shown.

• Dokumententyp: Zeitschriftenartikel
• Fakultät: Physik
• Themengebiete: 500 Naturwissenschaften und Mathematik > 530 Physik
• ISSN: 2100-014X
• Sprache: Englisch