Neutron radii and neutron skin of neutron-rich nuclei deduced from proton-nucleus total reaction cross sections

摘要

A new method is proposed to deduce the neutron radii of neutron-rich nuclei. This method requires measuring the reaction cross sections of both the neutron-rich nucleus and its stable isotope at the same energy per nucleon on a proton target. Using this method and the available experimental data of C-12,C-22 + p and Be-9,Be-14 + p at 40A MeV, the neutron radii of C-22 and Be-14 have been deduced.