Effects of the entrance channel and fission barrier in synthesis of superheavy element $Z$=120

Abstract

The fusion and evaporation residue cross sections for the ${}^{50}$Ti+${}^{249}$Cf and ${}^{54}$Cr+${}^{248}$Cm reactions calculated by the combined dinuclear system and advanced statistical models are compared. These reactions are considered to be used to synthesize the heaviest superheavy element. The ${}^{50}$Ti+${}^{249}$Cf reaction is more mass asymmetric than ${}^{54}$Cr+${}^{248}$Cm and the fusion excitation function for the former reaction is higher than the one for the latter reaction. The evaporation residue excitation functions for the mass asymmetric reaction is higher in comparison with the one of the ${}^{54}$Cr+${}^{248}$Cm reaction. The use of the mass values of superheavy nuclei calculated in the framework of the macroscopic-microscopic model by the Warsaw group leads to smaller evaporation residue cross section for both the reactions in comparison with the case of using the masses calculated by Peter Möller {\it et al}. The ${}^{50}$Ti+${}^{249}$Cf reaction is more favorable in comparison with the ${}^{54}$Cr+${}^{248}$Cm reaction: the maximum values of the excitation function of the 3n-channel of the evaporation residue formation for the ${}^{50}$Ti+${}^{249}$Cf and ${}^{54}$Cr+${}^{248}$Cm reactions are about 0.1 and 0.07 pb, respectively, but the yield of the 4n-channel for the former reaction is lower (0.004 pb) in comparison with the one (0.01 pb) for the latter reaction.

21 pages, 10 figures, 2 tables

References in corpus (4)

• Synthesis of superheavies: State of affairs and outlooks
• Quasifission and fusion-fission in massive nuclei reactions. Comparison of reactions leading to the Z=120 element
• Angular anisotropy of the fusion-fission and quasifission fragments
• Dynamics of dinuclear system formation and its decay in heavy ion collisions

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• Non-Gaussian Fluctuation and Non-Markovian Effect in the Nuclear Fusion Process: Langevin Dynamics Emerging from Quantum Molecular Dynamics Simulations
• Investigation on the 48Ca+249-252Cf reactions synthesizing isotopes of the superheavy element 118
• Progress of Quantum Molecular Dynamics model and its applications in Heavy Ion Collisions
• Analysis of the fusion mechanism in synthesis superheavy element 119 via ${}^{54}$Cr+${}^{243}$Am reaction
• An experimentalist's view of the uncertainties in understanding heavy element synthesis
• Systematics on production of superheavy nuclei $Z=119-122$ in fusion-evaporation reactions
• Examination of promising reactions with ${}^{241}$Am and ${}^{244}$Cm targets for the synthesis of new superheavy elements within the dinuclear system model with a dynamical potential energy surface
• Optimal colliding energy for the synthesis of superheavy element $Z$=119
• Uncertainties and understanding of experimental and theoretical results regarding reactions forming heavy and superheavy nuclei
• Systematic study on probable projectile-target combinations for the synthesis of the ${}^{302}$120 superheavy nucleus
• Energy-Dependence of Nucleus-Nucleus Potential and Friction Parameter in Fusion Reactions
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• Significance of the compound nucleus surface energy coefficients in the synthesis of the superheavy nuclei with $\text{Z=112-120}$
• Fission barriers with Weizsäcker-Skyrme mass model
• Multi-step particle emission probabilities in superheavy nuclei at moderate excitation energies
• Effects of entrance channel on fusion probability in hot fusion reactions
• Role of charged particle emission on the evaporation residue formation in the ${}^{82}$Se+${}^{138}$Ba reaction leading to the ${}^{220}$Th compound nucleus
• What perspectives for the synthesis of heavier superheavy nuclei? Results and comparison with models
• Investigation of the formation of superheavy elements with atomic numbers 116 and 120 through ${}^{50}$Ti-induced reaction