Momentum dependent interactions and the asymmetry of the reaction: Multifragmentation as an example

We discuss the importance of momentum dependent interactions in explaining the multifragmentation in asymmetric reactions by comparing the results with ¹⁶O-induced emulsion data. The reactions are simulated within a quantum molecular dynamics model and the clusterization is performed with the minimum spanning tree method. Our results clearly indicate that the inclusion of momentum dependent forces improves the agreement with the measured atomic number distribution. The simple static interaction fails to explain the experimental data. We also discuss the universal dependence of the effect of momentum dependent interactions on the asymmetry of a reaction.