Examination of promising reactions with 241Am and 244Cm targets for the synthesis of new superheavy elements within the dinuclear system model with a dynamical potential energy surface

Two actinide isotopes, 241Am and 244Cm, produced and chemically purified by the HFIR/REDC complex at ORNL are candidates for target materials of heavy-ion fusion reaction experiments for the synthesis of new superheavy elements (SHEs) with Z > 118. In the framework of the dinuclear system model with a dynamical potential energy surface (DNS-DyPES model), we systematically study the 48Ca-induced reactions that have been applied to synthesize SHEs with Z = 112-118, as well as the hot-fusion reactions with 241Am and 244Cm as targets, which are promising for synthesizing new SHEs with Z = 119-122. Detailed results including the maximal evaporation residue cross section and the optimal incident energy for each reaction are presented and discussed.

Automated summary

In this study, two actinide isotopes, 241Am and 244Cm, produced and purified by the HFIR/REDC complex at ORNL, are investigated as target materials for heavy-ion fusion reaction experiments for the synthesis of new superheavy elements with Z > 118. Using the dinuclear system model with a dynamical potential energy surface (DNS-DyPES model), the authors systematically study the reactions induced by 48Ca to synthesize SHEs with Z = 112-118, as well as the hot-fusion reactions with 241Am and 244Cm as targets to potentially synthesize new SHEs with Z = 119-122. Detailed results such as the maximal evaporation residue cross section and the optimal incident energy for each reaction are presented and discussed.