Connecting the nuclear EoS to the interplay between fusion and quasifission processes in low-energy nuclear reactions

Abstract

Within the Time Dependent Hartree Fock (TDHF) approach, we investigate the impact of several ingredients of the nuclear effective interaction, such as incompressibility, symmetry energy, effective mass, derivative of the Lane potential and surface terms on the exit channel (fusion vs quasifission) observed in the reaction ${}^{238}$U+${}^{40}$Ca, close to the Coulomb barrier. Our results show that all the ingredients listed above contribute to the competition between fusion and quasifission processes, however the leading role in determining the outcome of the reaction is played by incompressibility, symmetry energy and the isoscalar coefficient of the surface term. This study unravels the complexity of the fusion and quasifission reaction dynamics and helps to understand the microscopic processes responsible for the final outcome of low energy heavy ion collisions in terms of relevant features of the nuclear effective interaction and associated equation of state (EoS).

arXiv comment10 pages, 9 figures

References in corpus (47)

• Neutron Star Observations: Prognosis for Equation of State Constraints
• Recent Progress and New Challenges in Isospin Physics with Heavy-Ion Reactions
• Reaction Dynamics with Exotic Beams
• The Skyrme Interaction in finite nuclei and nuclear matter
• Density slope of the nuclear symmetry energy from the neutron skin thickness of heavy nuclei
• Nuclear Quantum Many-Body Dynamics: From Collective Vibrations to Heavy-Ion Collisions
• Time-dependent density-functional description of nuclear dynamics
• Higher-order effects on the incompressibility of isospin asymmetric nuclear matter
• Particle transfer reactions with the time-dependent Hartree-Fock theory using a particle number projection technique
• Time-dependent Hartree-Fock calculations for multinucleon transfer processes in ${}^{40,48}$Ca+${}^{124}$Sn, ${}^{40}$Ca+${}^{208}$Pb, and ${}^{58}$Ni+${}^{208}$Pb reactions
• Isovector splitting of nucleon effective masses, ab-initio benchmarks and extended stability criteria for Skyrme energy functionals
• Energy dependence of nucleus-nucleus potential close to the Coulomb barrier
• Giant Quadrupole Resonances in 208Pb, the nuclear symmetry energy and the neutron skin thickness
• A new Skyrme interaction with improved spin-isospin properties
• Interplay between quantum shells and orientation in quasi-fission
• Effect of pairing on one- and two-nucleon transfer below the Coulomb barrier: a time-dependent microscopic description
• Particle number fluctuations and correlations in transfer reactions obtained using the Balian-Vénéroni variational principle
• Microscopic phase-space exploration modeling of ${}^{258}$Fm spontaneous fission
• Stochastic quantum dynamics beyond mean-field
• Dissipative dynamics in quasi-fission
• Entrance Channel Dynamics of Hot and Cold Fusion Reactions Leading to Superheavy Elements
• Spin-Excitation Mechanisms in Skyrme-Force Time-Dependent Hartree-Fock
• The many facets of the (non relativistic) Nuclear Equation of State
• Shape evolution and collective dynamics of quasifission in TDHF
• Fluctuation and dissipation dynamics in fusion reactions from stochastic mean-field approach
• Isospin Transport at Fermi Energies
• Mass dispersion in transfer reactions with a stochastic mean-field theory
• The Role of Tensor Force in Heavy-Ion Fusion Dynamics
• Fusion process studied with preequilibrium giant dipole resonance in time dependent Hartree-Fock theory
• Collective Dipole Bremsstrahlung in Fusion Reactions
• Systematic of isovector and isoscalar giant quadrupole resonances in normal and superfluid spherical nuclei
• Exploring Zeptosecond Quantum Equilibration Dynamics: From Deep-Inelastic to Fusion-Fission Outcomes in ${}^{58}$Ni+${}^{60}$Ni Reactions
• Dissipation dynamics and spin-orbit force in time-dependent Hartree-Fock theory
• Collective aspects deduced from time-dependent microscopic mean-field with pairing: application to the fission process
• The Dynamical Dipole Mode in Dissipative Heavy Ion Collisions
• The Skyrme Tensor Force in Heavy Ion Collisions
• Systematic of isovector and isoscalar giant quadrupole resonances in normal and superfluid deformed nuclei
• On nucleon exchange mechanism in heavy-ion collisions at near-barrier energies
• Covariance Analysis of Symmetry Energy Observables from Heavy Ion Collision
• Symmetry Energy Effects on Fusion Cross Sections
• Sensitivity of the fusion cross section to the density dependence of the symmetry energy
• Clusterized nuclear matter in the (proto-)neutron star crust and the symmetry energy
• Dynamical effects in fusion with exotic nuclei
• Nucleon exchange in heavy-ion collisions within stochastic mean-field approach
• Dipole response in neutron-rich nuclei with new Skyrme interactions
• Pre-equilibrium effects in charge-asymmetric low-energy reactions
• Microscopic description of large amplitude collective motion in the nuclear astrophysics context

Cited by in corpus (16)

• TDHF Theory and Its Extensions for the Multinucleon Transfer Reaction: a Mini Review
• Microscopic studies of production cross sections in multinucleon transfer reaction ${}^{58}$Ni+${}^{124}$Sn
• Quantal diffusion approach for multinucleon transfer processes in the ${}^{58,64}$Ni+${}^{208}$Pb reactions: Toward the production of unknown neutron-rich nuclei
• Deformed shell effects in ${}^{48}$Ca+${}^{249}$Bk quasifission fragments
• Comparison of fission and quasi-fission modes
• Interplay between low-lying isoscalar and isovector dipole modes: a comparative analysis between semi-classical and quantum approaches
• Time-dependent Hartree-Fock study of quasifission trajectories in reactions forming ${}^{294}$Og
• Quantal diffusion description of isotope production by multinucleon transfer mechanism in ${}^{48}\text{Ca}+{}^{238}\text{U}$ collisions
• Embedding short-range correlations in relativistic density functionals through quasi-deuterons
• Modeling Heavy-Ion Fusion Cross Section Data via a Novel Artificial Intelligence Approach
• Nuclear Quantum Many-Body Dynamics: From Collective Vibrations to Heavy-Ion Collisions (2nd edition)
• 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
• Above-barrier heavy-ion fusion cross-sections using the relativistic mean-field approach: case of spherical colliding nuclei
• Dispersion chain of quantum mechanics equations
• Shell effects in quasi-fission for calcium induced reactions forming thorium isotopes
• The Vlasov equation correct application based on the higher orders kinematic values for the dissipative systems description