Time-dependent Hartree-Fock plus Langevin approach for hot fusion reactions to synthesize the $Z=120$ superheavy element

Abstract

We develop a novel approach to fusion reactions for syntheses of superheavy elements, which combines the time-dependent Hartree-Fock (TDHF) method with a dynamical diffusion model based on the Langevin equation. In this approach, the distance of the closest approach for the capture process is estimated within the TDHF approach, which is then plugged into the dynamical diffusion model as an initial condition. We apply this approach to hot fusion reactions leading to formation of the element $Z=120$, that is, the ${}^{48}$Ca+${}^{254,257}$Fm, ${}^{51}$V+${}^{249}$Bk, and ${}^{54}$Cr+${}^{248}$Cm reactions. Our calculations indicate that the distances of the closest approach for these systems are similar to each other and thus the difference in the probabilities of evaporation residue formation among those reaction systems originates mainly from the evaporation process, which is sensitive to the fission barrier height and the excitation energy of a compound nucleus.

5 pages, 2 figures, 1 table; published in Physical Review C as a Rapid Communication with Editors' Suggestion

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Cited by in corpus (11)

• Coupled-channels calculations for nuclear reactions: from exotic nuclei to superheavy elements
• Production of proton-rich nuclei in the vicinity of 100Sn via multinucleon transfer reactions
• Fusion cross section of the superheavy $Z$ = 120 nuclei within the relativistic mean-field formalism
• Impact of tensor force on quantum shell effects in quasifission reactions
• Microscopic study of the compound nucleus formation in cold-fusion reactions
• Reaction mechanism study for multinucleon transfer processes in collisions of spherical and deformed nuclei at energies near and above the Coulomb barrier: The ${}^{16}$O+${}^{154}$Sm reaction
• Nuclear Quantum Many-Body Dynamics: From Collective Vibrations to Heavy-Ion Collisions (2nd edition)
• Dynamical mechanism of fusion hindrance in heavy ion collisions
• Multi-body wave function of ground and low-lying excited states using unornamented deep neural networks
• Inertial energy dissipation in nuclear dynamics
• Microscopic quasifission dynamics of the ${}^{54}\text{Cr}+{}^{243}\text{Am}$ reaction