Constraints on the Density Dependence of the Symmetry Energy

TitleConstraints on the Density Dependence of the Symmetry Energy
Publication TypeJournal Article
Year of Publication2009
AuthorsTsang, MB, Zhang, Y, Danielewicz, P, Famiano, M, Li, Z, Lynch, WG, Steiner, AW
JournalPhysical Review Letters
Volume102
Pagination122701
Date Published03/2009
Abstract

Collisions involving {112Sn} and {124Sn} nuclei have been simulated with the improved quantum molecular dynamics transport model. The results of the calculations reproduce isospin diffusion data from two different observables and the ratios of neutron and proton spectra. By comparing these data to calculations performed over a range of symmetry energies at saturation density and different representations of the density dependence of the symmetry energy, constraints on the density dependence of the symmetry energy at subnormal density are obtained. The results from the present work are compared to constraints put forward in other recent analyses.