Study on Excitation Function and Isospin Dependencies of Total Reaction Cross Section via the Boltzmann-Uehling-Uhlenbeck Model

The excitation function and isospin dependencies of σ_R have been investigated by using the Boltzmann-Uehling-Uhlenbeck (BUU) model with a square-type density distribution. When the width parameter of the square distribution is obtained by fitting σ_R at relativistic energies, the BUU-model can reproduce the experimental data at intermediate energies better than Glauber model. The systematical underestimation of σ_R at intermediate energy by Glauber model was removed out now by BUU calculation framework. It is also found that σ_R is sensitive to nuclear equation of state and σ_NN^in-medium . The difference factor d defined in text is sensitive to the nuclear structure such as neutron halo and neutron skin, etc.