Constraining the equation of state of nuclear matter from competition of fusion and quasi-fission in the reactions leading to production of the superheavy elements

Abstract

The mechanism of fusion hindrance, an effect preventing the synthesis of superheavy elements in the reactions of cold and hot fusion, is investigated using the Boltzmann-Uehling-Uhlenbeck equation, where Coulomb interaction is introduced. A strong sensitivity is observed both to the modulus of incompressibility of symmetric nuclear matter, controlling the competition of surface tension and Coulomb repulsion, and to the stiffness of the density-dependence of symmetry energy, influencing the formation of the neck prior to scission. The experimental fusion probabilities were for the first time used to derive constraints on the nuclear equation of state. A strict constraint on the modulus of incompressibility of nuclear matter $K_0=240-260$ MeV is obtained while the stiff density-dependences of the symmetry energy ($\gamma >1.$) are rejected.

9 pages, 4 figures

References in corpus (6)

• Incompressibility in finite nuclei and nuclear matter
• 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
• Collision dynamics of two ${}^{238}$U atomic nuclei
• Dissipative dynamics in quasi-fission
• Dynamical analysis on heavy-ion fusion reactions near Coulomb barrier

Cited by in corpus (5)

• Deformed shell effects in ${}^{48}$Ca+${}^{249}$Bk quasifission fragments
• Simulation of fusion and quasi-fission in nuclear reactions leading to production of superheavy elements using the Constrained Molecular Dynamics model
• Correlation between the charge radii difference in mirror partner nuclei and the symmetry energy slope
• Interplay between Symmetry Energy and Excluded Volume Corrections under the Direct Urca Cooling Constraint in Neutron Stars
• Investigating Possible Existence of Hyper-Heavy Nuclei in Neutron Star Environment