Exploring the optimal way to produce new nuclides in the region of heavy and superheavy nuclei

The synthesis of new nuclides is an important direction in nuclear physics research. This article explores the optimal methods for producing new nuclides in the transuranic nuclear region. Based on the dinuclear system model, the influence of the isospin effect on the synthesis of actinide neutron-deficient nuclides through fusion evaporation reactions is studied. It is found that, for the same compound nucleus, using projectile-target combinations with a smaller neutron asymmetry can result in a larger capture cross section. Subsequently, taking the synthesis of curium element isotopes as an example, the best method for producing new actinide nuclides is explored. It is found that fusion evaporation reactions can achieve a larger reaction cross section under extremely neutron-deficient conditions, while multinucleon transfer reactions have a larger cross section in the neutron-rich region. Finally, the possibility of producing superheavy neutron-rich nuclides using multinucleon transfer reactions is theoretically predicted.