Time-dependent Hartree-Fock study of quasifission trajectories in reactions forming ${}^{294}$Og

Abstract

Background: Fission modes in superheavy nuclei are expected to be impacted by quantum shell effects. Similar shell effects may be present in quasifission reactions, acting to hinder the mass equilibration process in heavy-ion collisions. Purpose: To investigate quasifission mechanisms in five different reactions forming ${}^{294}$Og as a compound nucleus and compare quasifission trajectories with predicted fission modes. Methods: The potential energy surface (PES) of ${}^{294}$Og is calculated using the static Hartree-Fock approach with BCS pairing correlations. Quasifission trajectories for central collisions at various energies are studied with the time-dependent Hartree-Fock theory. Results: The exit channel strongly depends on initial mass asymmetry and orientation, but it only exhibits small dependences in the reaction energy. The ${}^{48}$Ca${+}^{246}$Cf reaction is affected by the PES topology, leading to either fusion or asymmetric fission. Spherical shell effects associated with the $Z=50$ magic gap hinder charge and mass equilibrations in ${}^{126}$Sn${+}^{168}$Er, resulting in large total kinetic energies and compact scission configurations. Conclusions: Quasifission trajectories can be interpreted in terms of the underlying PES for low excitation energies. Future investigations of quasifission with temperature and angular momentum dependent PES could be considered.

arXiv comment14 pages, 11 figures, 6 tables

References in corpus (43)

• Microscopic Theory of Nuclear Fission: A Review
• Heavy particle radioactivities of superheavy nuclei
• Nuclear Quantum Many-Body Dynamics: From Collective Vibrations to Heavy-Ion Collisions
• Induced Fission of ${}^{240}$Pu within a Real-Time Microscopic Framework
• The TDHF Code Sky3D
• Review on the progress in nuclear fission
• Heavy-ions collisions and fission dynamics with the time-dependent Hartree-Fock theory and its extensions
• Future of Nuclear Fission Theory
• Formation and dynamics of fission fragments
• Interplay between quantum shells and orientation in quasi-fission
• Time-dependent Hartree-Fock calculations for multinucleon transfer and quasifission processes in the ${}^{64}$Ni+${}^{238}$U reaction
• Fission Barriers of Compound Superheavy Nuclei
• TDHF Theory and Its Extensions for the Multinucleon Transfer Reaction: a Mini Review
• Structure properties of ${}^{226}$Th and ${}^{256,258,260}$Fm fission fragments: mean field analysis with the Gogny force
• Fission dynamics within time-dependent Hartree-Fock: deformation-induced fission
• Effect of shell structure on the fission of sub-lead nuclei
• Microscopic phase-space exploration modeling of ${}^{258}$Fm spontaneous fission
• Dissipative dynamics in quasi-fission
• Low-Energy Heavy-Ion Reactions and the Skyrme Effective Interaction
• A new inverse quasifission mechanism to produce neutron-rich transfermium nuclei
• Shape evolution and collective dynamics of quasifission in TDHF
• Excitation energy dependence of fission in the mercury region
• Timescales of quantum equilibration, dissipation and fluctuation in nuclear collisions
• Adiabatic fission barriers in superheavy nuclei
• Cluster Radioactivity in Super Heavy Nuclei
• Reduced quasifission competition in fusion reactions forming neutron-rich heavy elements
• Microscopic self-consistent description of induced fission dynamics: finite temperature effects
• Cluster radioactivity of ${}_{118}^{294}$Og${}_{176}$
• Deformed shell effects in ${}^{48}$Ca+${}^{249}$Bk quasifission fragments
• Isotopic trends of quasifission and fusion-fission in the reactions ${}^{48}$Ca+${}^{239,244}$Pu
• Microscopic analysis of induced nuclear fission dynamics
• Connecting the nuclear EoS to the interplay between fusion and quasifission processes in low-energy nuclear reactions
• Production of proton-rich nuclei in the vicinity of 100Sn via multinucleon transfer reactions
• Quasifission dynamics in microscopic theories
• Evidence for the role of proton shell closure in quasi-fission reactions from X-ray fluorescence of mass-identified fragments
• The impact of the surface energy coefficient on the deformation properties of atomic nuclei as predicted by Skyrme energy density functionals
• Comparison of fission and quasi-fission modes
• Time-dependent generator coordinate method study of fission: dissipation effects
• Fission of super-heavy elements: ${}^{132}$Sn-plus-the-rest, or ${}^{208}$Pb-plus-the-rest ?
• Impact of tensor force on quantum shell effects in quasifission reactions
• Fission dynamics, dissipation and clustering at finite temperature
• Hartree-Fock-Bogoliubov study of quantum shell effects on the path to fission in ${}^{180}$Hg, ${}^{236}$U and ${}^{256}$Fm
• Extended time-dependent generator coordinate method study of induced fission (II): total kinetic energy distribution

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