Exploiting neutron-rich radioactive ion beams to constrain the symmetry energy

Z. Kohley*, G. Christian, T. Baumann, P. A. Deyoung, J. E. Finck, N. Frank, M. Jones, J. K. Smith, J. Snyder, A. Spyrou, M. Thoennessen

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

9 Scopus citations

Abstract

The Modular Neutron Array (MoNA) and 4 Tm Sweeper magnet were used to measure the free neutrons and heavy charged particles from the radioactive ion beam induced 32Mg+9Be reaction. The fragmentation reaction was simulated with the constrained molecular dynamics model (CoMD), which demonstrated that the N/ of the heavy fragments and free neutron multiplicities were observables sensitive to the density dependence of the symmetry energy at subsaturation densities. Through comparison of these simulations with the experimental data, constraints on the density dependence of the symmetry energy were extracted. The advantage of radioactive ion beams as a probe of the symmetry energy is demonstrated through examination of CoMD calculations for stable and radioactive-beam-induced reactions.

Original languageEnglish (US)
Article number041601
JournalPhysical Review C - Nuclear Physics
Volume88
Issue number4
DOIs
StatePublished - Oct 1 2013
Externally publishedYes

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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