In connection with experiments at Radioactive Ion Beam Facilities, we study fusion reactions of exotic neutron-rich nuclei at energies in the vicinity of the Coulomb barrier. Dynamic microscopic calculations using time-dependent density functional theory are carried out on a 3D lattice. There are no adjustable parameters, the only input is an effective (Skyrme) NN interaction. While fusion cross sections above the barrier can be calculated with the standard Time-Dependent Hartree Fock (TDHF) method, calculations at sub-barrier energies require a new approach which we call the Density Constrained TDHF (DC-TDHF) method. This allows us to compute heavy-ion interaction potentials V(R), mass parameters M(R), dynamic excitation energies E*(R), and total fusion cross sections s(Ecm). Some of the effects naturally included in this dynamic approach are: neck formation, multi-nucleon transfer, internal excitations, deformation effects,and nuclear alignment for deformed systems. Results will be presented for the systems 132Sn+40,48Ca, for the reactions 12C+16,20,24O which occur in the crust of neutron stars, and for``hot'' and ``cold'' fusion reactions in connection with superheavy element production.

Fusion of neutron-rich nuclei using a time-dependent density functional theory with density constraint

246th National Meeting (2013)

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