Synthesis of superheavy nuclei with Z =118 in hot fusion reactions

The evaporation residue (ER) cross sections for producing superheavy nuclei with charge number 118 in some ⁴⁸Ca-induced reactions are studied theoretically with the dinuclear system model with dynamical potential energy surface (DNS-DyPES model) for the experiment, which is aimed to produce the isotopes of element Z =118. The experiment is under way at the Flerov Laboratory of the Joint Institute for Nuclear Research in Dubna, Russia. The calculated ER cross sections for ⁴⁸Ca + ²⁴⁹Cf are found to be in good agreement with the experimental results. The excitation functions for ⁴⁸Ca + ^250,251,252Cf are calculated and predicted, and the dependence of the residue cross sections for producing ^{293,294,295,296,297}118 on the bombarding energies is also calculated for an isotopic composition of the Cf target. The possibilities for producing element 118 with other projectile-target combinations such as ⁵⁰Ti + ²⁴⁸Cm and ⁵⁴Cr + ²⁴⁴Pu at different mass asymmetries of entrance channels are also investigated.