Probing Balance Energy Using Momentum- and Isospin-Dependent Potential

Using the momentum- and isospin-dependent Boltmann--Uehling--Uhlenbeck (BUU) model, we investigate the transverse flow and balance energy in two isotopic colliding systems ⁴⁸Ca+⁵⁸Fe and ⁴⁸Cr+⁵⁸Ni by adopting different symmetry potentials. By comparing the results between the two colliding systems, we find that the difference between the balance energies of two isotopic systems can be considered as a sensitive probe to the density dependence of symmetry energy.