On the Mechanism of Forward Emitted Fragment Production in 22Ne + 9Be Reaction in the Vicinity of the Fermi Energy

The charge and relative velocity distributions of forward emitted fragments in the ²²Ne + ⁹Be reaction at bombarding energy of 40 AMeV are presented. Experimental results are compared with the quantum molecular dynamics (QMD) model taking into account in calculations the mean field-like effects and the two-body scattering term. In the theoretical analysis a subsequent statistical decay of excited primary reaction products following the QMD predictions is applied. The assumption of two scenarios responsible for production of forward emitted fragments results in a good representation of the data suggesting a preferential contribution of the mean field-like effects in production mechanism.