Role of the Surface Energy in Heavy-Ion Collisions
arXiv:1911.03559 · doi:10.1051/epjconf/202023203005
Abstract
The surface energy is one of the fundamental properties nuclei, appearing in the simplest form of the semi-empirical mass formula. The surface enery has an influence on e.g. the shape of a nucleus and its ability to deform. This in turn could be expected to have an effect in fusion reactions around the Coulomb barrier where dynamical effects such as the formation of a neck is part of the fusion process. Frozen Hartree-Fock and Time-Dependent Hartree-Fock calculations are made for a series of effective interactions in which the surface energy is systematically varied, using Ca + Ca as a test case. The dynamical lowering of the barrier is greatest for the largest surface energy, contrary to naive expectations, and we speculate that this may be due to the variation in other nuclear matter properties for these effective interactions
arXiv commentSubmitted to proceedings of HIAS 2019
References in corpus (14)
- Skyrme Interaction and Nuclear Matter Constraints
- The Skyrme Interaction in finite nuclei and nuclear matter
- Time-dependent density-functional description of nuclear dynamics
- Surface Symmetry Energy
- Heavy-ions collisions and fission dynamics with the time-dependent Hartree-Fock theory and its extensions
- TDHF Theory and Its Extensions for the Multinucleon Transfer Reaction: a Mini Review
- Low-Energy Heavy-Ion Reactions and the Skyrme Effective Interaction
- Spin-Excitation Mechanisms in Skyrme-Force Time-Dependent Hartree-Fock
- The Role of Tensor Force in Heavy-Ion Fusion Dynamics
- Dissipation dynamics and spin-orbit force in time-dependent Hartree-Fock theory
- The Skyrme Tensor Force in Heavy Ion Collisions
- Constraining the surface properties of effective Skyrme interactions
- Sensitivity of the fusion cross section to the density dependence of the symmetry energy
- Dynamical effects of spin-dependent interactions in low- and intermediate-energy heavy-ion reactions