NUCLEAR-DYNAMICS FOR HEAVY-ION COLLISIONS WITH A MOMENTUM-DEPENDENT POTENTIAL

The Boltzmann-Nordheim-Vlasov equation has been solved by using a micr oscopic momentum dependent (MD) nuclear mean field. This potential has been calculated in the framework of the self consistent Brueckner the ory up to the second order in the G-matrix. Comparison with the so cal led soft and stiff Equation of State (EOS) is presented, using the Sky rme force. The calculations have been performed for Ca-40 + Ca-40 and Nb-93 + Nb-93 reactions, from the balance energy up to E(lab) = 800A M eV. At variance with the MD phenomenological potentials, the results a t higher energy show that our soft EOS with MD mean field gives predic tions which do not differ very much from the soft EOS with Skyrme pote ntial without momentum dependence. On the other hand, at lower energy the MD potential has a behaviour which is quite different from both so ft and stiff EOS, especially as far as the balance energy is concerned .