A flow analysis on symmetric and asymmetric reactions from 100 to 400 MeV/nucleon is performed in the framework of the semiclassical Landau-Vlasov approach. In this energy range our results present two different trends. At lower energies it is governed by the momentum dependence of the nuclear optical potential, whereas at higher energies its density dependence plays a crucial role leading to a rather pronounced sensitivity to the incompressibility modulus. The nonlocality of the nuclear interaction is relevant for asymmetric colliding systems. With an incompressibility modulus in the vicinity of 200 MeV, an excellent quantitative description of the flow behavior with incident energy and impact parameter or the system mass is provided.

• Received 17 April 1995

DOI:https://doi.org/10.1103/PhysRevC.52.2013