Microscopic study of the compound nucleus formation in cold-fusion reactions

Abstract

The understanding of the fusion probability is of particular importance to reveal the mechanism of producing superheavy elements. We present a microscopic study of the compound nucleus formation by combining time-dependent density functional theory, coupled-channels approach, and dynamical diffusion models. The fusion probability and compound nucleus formation cross sections for cold-fusion reactions ${}^{48}$Ca+${}^{208}$Pb, ${}^{50}$Ti+${}^{208}$Pb, and ${}^{54}$Cr+${}^{208}$Pb are investigated and it is found that the deduced capture barriers, capture cross sections for these reactions are consistent with experimental data. Above the capture barrier, our calculations reproduce the measured fusion probability reasonably well. Our studies demonstrate that the restrictions from the microscopic dynamic theory improve the predictive power of the coupled-channels and diffusion calculations.

9 pages, 4 figures

References in corpus (17)

• Subbarrier fusion reactions and many-particle quantum tunneling
• Synthesis of superheavies: State of affairs and outlooks
• Energy dependence of nucleus-nucleus potential close to the Coulomb barrier
• Theoretical study of the synthesis of superheavy nuclei with Z= 119 and 120 in heavy-ion reactions with trans-uranium targets
• Heavy-ion interaction potential deduced from density-constrained TDHF calculation
• Interplay between quantum shells and orientation in quasi-fission
• TDHF Theory and Its Extensions for the Multinucleon Transfer Reaction: a Mini Review
• How the Pauli exclusion principle affects fusion of atomic nuclei
• Dissipative dynamics in quasi-fission
• Reduced quasifission competition in fusion reactions forming neutron-rich heavy elements
• ${}^{64}$Ni+${}^{64}$Ni fusion reaction calculated with the density-constrained time-dependent Hartree-Fock formalism
• Time-dependent Hartree-Fock plus Langevin approach for hot fusion reactions to synthesize the $Z=120$ superheavy element
• Applications of Skyrme energy-density functional to fusion reactions for synthesis of superheavy nuclei
• Dissipation dynamics and spin-orbit force in time-dependent Hartree-Fock theory
• Production of proton-rich nuclei in the vicinity of 100Sn via multinucleon transfer reactions
• Microscopic study on fusion reactions ${}^{40,48}\mathrm{Ca}+{}^{78}\mathrm{Ni}$ and the effect of tensor force
• Diffusion as a possible mechanism controlling the production of superheavy nuclei in cold fusion reactions

Cited by in corpus (5)

• Impact of tensor force on quantum shell effects in quasifission reactions
• Nuclear Quantum Many-Body Dynamics: From Collective Vibrations to Heavy-Ion Collisions (2nd edition)
• Impact of octupole correlation on the inverse quasifission in ${}^{160}\text{Gd}+{}^{186}\text{W}$ collisions
• Microscopic quasifission dynamics of the ${}^{54}\text{Cr}+{}^{243}\text{Am}$ reaction
• The Quest for Superheavy Nuclei: A Theoretical Perspective