Dynamical and quantum mechanical corrections to heavy-ion optical potentials

Abstract

Low-energy elastic scattering, molecular resonances and barrier penetration properties of the 16O + 16O reaction have been investigated microscopically. From a deformed shell model, taking into account nuclear polarization in the overlapping region, we have evaluated a static potential-energy surface V(r) . Dynamic effects are included by evaluating a (variable) collective mass M(r) and a rotational momentum of inertia Θ( r). Quantum corrections are included by removing the spurious zero-point energies, Z(r) . An imaginary part is added phenomenologically, where both a surface and a volume absorbing potential are considered. The (collective) scattering equation is solved to obtain the elastic cross section, the position of resonances and barrier penetration parameters. The aim of this work is not to reproduce well experimental data but rather to investigate the importance of the quantum mechanical and dynamical corrections. Therefore no fitting to data has been done. It turns out that the effects of the corrections cannot be neglected for an accurate description of the collision process.