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

Abstract

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 on a proton target. Using this method and the available experimental data of ${}^{12,22}$C + $p$ and ${}^{9,14}$Be + $p$ at 40$A$ MeV, the neutron radii of ${}^{22}$C and ${}^{14}$Be have been deduced for the first time.

Comments: 5 pages, 5 figures