Nucleon exchange in heavy-ion collisions within a stochastic mean-field approach

Nucleon exchange mechanism is investigated in deep-inelastic symmetric heavy-ion collisions in the basis of the stochastic mean-field approach. By extending the previous work to off-central collisions, an analytical expression is deduced for the diffusion coefficient of the nucleon exchange mechanism. Numerical calculations are carried out for Ca-40 + Ca-40 and Zr-90 + Zr-90 systems and the results are compared with the phenomenological nucleon exchange model. Also, calculations are compared with the available experimental results of deep-inelastic collisions between calcium nuclei.