2004/06/14 by D. V. Shetty, S. J. Yennello, A. S. Botvina +12 · 4 citations
Earth and Planetary Sciences · Physics and Astronomy · #High-pressure geophysics and materials #Nuclear physics research studies #Quantum Chromodynamics and Particle Interactions #nucl-ex
paper · pdf · doi:10.1103/physrevc.70.011601
published as Phys.Rev. C70 (2004) 011601 · 5 pages, 5 figures, Accepted for publication in Phys. Rev. C (Rapid Communication)
arxiv created 2004/06/14 · openalex publication_date 2004/07/06 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
The isoscaling parameter \ensuremathα, from the fragments produced in the multifragmentation of 58Ni+58Ni, 58Fe+58Ni and 58Fe+58Fe reactions at 30, 40 and 47\phantom\rule0.3em0exMeV∕nucleon, was compared with that predicted by the antisymmetrized molecular dynamic calculation based on two different nucleon-nucleon effective forces, namely the Gogny and Gogny-AS interaction. The results show that the data agree better with the choice of Gogny-AS effective interaction, resulting in a symmetry energy of \ensuremath∼18--20\phantom\rule0.3em0exMeV. The observed value indicates that the fragments are formed at a reduced density of \ensuremath∼0.08\phantom\rule0.3em0exfm^\ensuremath-3.