A revisit to the neutron skin thickness of neutron-rich nuclei in the statistical abrasion ablation model

Abstract

The cross sections of the fragments produced in the projectile fragmentation reactions of the even calcium isotopes from A = 36 to A = 52 are calculated using the statistical abrasion ablation model. The neutron skin thickness are studied by investigating the fragments isotopic cross section distributions. The neutron-skin thicknesses of the calcium isotopes have a good linear correlation to the peak positions of their fragment isotopic cross section distributions. The correlation between the neutron skin thickness and the neutron density distributions of 48Ca is investigated by introducing a parameter to adjust the diffuseness parameter in the fermi-type density distribution.