Revisiting the isospin relaxation time in intermediate-energy heavy-ion collisions
arXiv:1807.01849 · doi:10.1103/PhysRevC.98.054608
Abstract
Isospin relaxation times characterizing isospin transport processes between the projectile and the target with different ratios and that between the neck and the spectator with different isospin asymmetries and densities in intermediate-energy heavy-ion collisions are studied within an isospin-dependent Boltzmann-Uehling-Uhlenbeck transport model using the lattice Hamiltonian approach. The respective roles and time scales of the isospin diffusion and drift as the major mechanisms of isospin transport in intermediate-energy heavy-ion collisions are discussed. Effects of nuclear symmetry energy and neutron-proton effective mass splitting on the isospin relaxation times are examined.
arXiv comment9 pages, 6 figures, minor modifications
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