Symmetry energy for fragmentation in dynamical nuclear collisions

2004/09/14 by Akira Ono, Paweł Danielewicz, P. Danielewicz +5
Mathematics · Physics and Astronomy · #Atomic physics #Breakup #Excitation #Fragmentation (computing) #High-Energy Particle Collisions Research #Mathematics #Mechanics #Molecular dynamics #Nuclear physics research studies #Physics #Quantum Chromodynamics and Particle Interactions #Quantum mechanics #Symmetry (geometry) #nucl-th

paper · pdf · doi:10.1103/physrevc.70.041604

published as Phys.Rev. C70 (2004) 041604 · 11 pages, 4 figures

arxiv created 2004/09/14 · openalex publication_date 2004/10/01 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

We extract values for the free symmetry energy as a function of the fragment size (the proton number Z) from antisymmetrized molecular dynamics calculations of calcium collisions. Simple statistical physics describe well the distribution of hot nuclei at breakup, provided the surface symmetry term in the free energy is much smaller at high excitation than in ground state nuclei. This result may reflect the condition of low density and finite temperature when these systems disassemble.

Citations

• Antisymmetrized molecular dynamics of wave packets with stochastic incorporation of the Vlasov equation
• Neutron Star Structure and the Equation of State
• Surface symmetry energy
• Isospin Fractionation in Nuclear Multifragmentation
• Zur Theorie der Kernmassen

Cited by

• Isospin dependent thermodynamics of fragmentation