Abstract
The role of tensor force is investigated by using the time-dependent Hartree-Fock (TDHF) theory in the collision 16 O+40 Ca. The full tensor force is incorporated in our TDHF implementation. The calculations are performed in three-dimensional Cartesian coordinate without any symmetry restrictions. We study the effect of tensor force on Coulomb barrier, upper fusion threshold energy, and energy contribution of the time-odd and tensor terms in Skyrme energy functional. The Coulomb barrier obtained from the energy functional with frozen density approximation is compared with the available experimental data. We find that the tensor force may change the upper fusion threshold energy in the order of a few MeV for the collision 16 O+40 Ca. The tensor force has a non-negligible effect in heavy-ion collisions.
Highlights
The microscopic description of heavy-ion collisions such as time-dependent Hartree-Fock (TDHF) theory provides a useful foundation for a fully microscopic many-body theory
We study the role of tensor force within the TDHF theory for the collision 16O+40Ca
The full tensor force is incorporated in our TDHF implementation
Summary
The microscopic description of heavy-ion collisions such as time-dependent Hartree-Fock (TDHF) theory provides a useful foundation for a fully microscopic many-body theory. This conflict between TDHF prediction and experimental observations is called the puzzle of small fusion window, and promotes the theoretical development These studies indicate the nucleon-nucleon interaction plays a significant role in heavy-ion collisions. The role of time-even tensor force in the dissipation dynamics in deep-inelastic collisions has been explored in Ref.
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