Confronting measured near and sub-barrier fusion cross-sections for 20O+12C with a microscopic method

TL;DR

This paper compares recent experimental fusion cross-sections of 20O+12C with microscopic calculations based on time-dependent density functional theory, highlighting discrepancies and the method's parameter-free nature.

Contribution

It applies a parameter-free, microscopic DC-TDHF method to analyze fusion cross-sections, providing insights into its accuracy and limitations for neutron-rich systems.

Findings

Microscopic calculations are closer to experimental data than standard models.

The method underpredicts the measured fusion cross-sections significantly.

Calculations are performed on a 3D lattice with and without density constraints.

Abstract

Recently measured fusion cross-sections for the neutron-rich system 20O+12C are compared to dynamic, microscopic calculations using time-dependent density functional theory. The calculations are carried out on a three-dimensional lattice and performed both with and without a constraint on the density. The method has no adjustable parameters, and its only input is the Skyrme effective NN interaction. While the microscopic DC-TDHF calculations lie closer to the experimental data than standard fusion systematics they underpredict the experimental data significantly.