Theoretical study of the synthesis of superheavy nuclei with Z= 119 and 120 in heavy-ion reactions with trans-uranium targets

Abstract

By using a newly developed di-nuclear system model with a dynamical potential energy surface---the DNS-DyPES model, hot fusion reactions for synthesizing superheavy nuclei (SHN) with the charge number Z = 112-120 are studied. The calculated evaporation residue cross sections are in good agreement with available data. In the reaction 50Ti+249Bk -> (299-x)119 + xn, the maximal evaporation residue (ER) cross section is found to be about 0.11 pb for the 4n-emission channel. For projectile-target combinations producing SHN with Z=120, the ER cross section increases with the mass asymmetry in the incident channel increasing. The maximal ER cross sections for 58Fe+244Pu and 54Cr + 248Cm are relatively small (less than 0.01 pb) and those for 50Ti+249Cf and 50Ti+251Cf are about 0.05 and 0.25 pb, respectively.

6 pages, 5 figures; Phys. Rev. C, in press

References in corpus (3)

• Synthesis of superheavies: State of affairs and outlooks
• Formation of superheavy nuclei in cold fusion reactions
• Quasifission and fusion-fission in massive nuclei reactions. Comparison of reactions leading to the Z=120 element

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• Potential energy surfaces of actinide and transfermium nuclei from multi-dimensional constraint covariant density functional theories
• Reaction Cross Section in Heavy-Ion Collisions
• Energy-Dependence of Nucleus-Nucleus Potential and Friction Parameter in Fusion Reactions
• Effects of entrance channel on fusion probability in hot fusion reactions
• Superheavy elements: existence, classification and experiment