1998/09/30 by A. Hombach, W. Cassing, U. Mosel · 1 citation
Physics and Astronomy · #High-Energy Particle Collisions Research #Nuclear physics research studies #Quantum Chromodynamics and Particle Interactions #nucl-th
paper · pdf · doi:10.1007/s100500050259
published as Eur.Phys.J. A5 (1999) 77-84 · 16 pages, 12 figures, submitted to Europ. Phys. J. A Discussion added
arxiv created 1998/12/15 · openalex publication_date 1999/05/01 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
We study the mixing and the kinetic equilibration of projectile and target nucleons in relativistic heavy-ion collisions in the energy regime between 150~AMeV and 2~AGeV in a coupled-channel BUU (CBUU) approach. We find that equilibrium in the projectile-target degrees of freedom is in general not reached even for large systems at low energy where elastic nucleon-nucleon collisions dominate. Inelastic nucleon excitations are more favorable for equilibration and their relative abundance increases both with energy and mass. Experimentally, the projectile/target admixture can be determined by measuring the degree of isospin equilibration in isospin asymmetric nuclear collisions. For one of the most promising systems currently under investigation, 9644\rm Ru+9640\rm Zr, we investigate the influence of the equation of state and the inelastic in-medium cross section.