Investigation of the correlation between the distribution of surface nucleons and incompressibility of nuclear matter in the 40Ca+40Ca reaction

Abstract

This work examines the relation between the bulk incompressibility of nuclear matter, K, and the surface nucleon distribution during the reaction process. Taking into account Pauli exclusion corrections, the double-folding (DF) formalism with the different density-dependent M3Y forces is applied to the analysis of the symmetric reaction of ⁴⁰Ca+⁴⁰Ca. Changes in the surface density distributions of protons and neutrons are found to be strongly correlated with changes in the bulk incompressibility. The obtained results suggest that, in addition to the symmetry energy slope, the quantity of neutron skin thickness (NST) may have a correlation with K values when evaluated utilizing heavy ion reactions. This constraint is caused by the influence of the bulk nuclear matter incompressibility on the surface nucleon distribution during the fusion reaction.