Distinct sequential and massive transfer processes for production of neutron-rich N? 126 nuclei in 238U+198Pt reactions

To investigate the underlying mechanisms responsible for the enhanced production of new neutron-rich N & AP; 126 nuclei in the reaction 238U + 198Pt, detailed simulations of the system at an incident energy of 8 MeV/nucleon using the improved quantum molecular dynamics model have been performed. Sequential and massive transfer processes, responsible for the production of targetlike and projectilelike n-rich N & AP; 126 frag-ments, respectively, have been recognized. Compared to sequential transfer, the contribution from the massive transfer process plays an almost equal role for the production of new nuclei with atomic number Z 76. The two processes show distinct features in the angular and kinetic energy distributions in the laboratory system and hopefully can be disentangled experimentally.

Automated summary

In this study, detailed simulations of the reaction 238U + 198Pt were performed using an improved quantum molecular dynamics model. It was found that both the sequential and massive transfer processes contribute to the production of neutron-rich N & AP; 126 nuclei, with distinct features in angular and kinetic energy distributions in the laboratory system. These processes can potentially be distinguished experimentally.