Pion-Ca40and Pion-Ca48Elastic Scattering and the Neutron Radius ofCa48

Abstract
π+ and π data were obtained for scattering off Ca40 and Ca48 at 130 MeV. The Ca48 angular distributions showed important π+π cross-section differences as well as significant position shifts of the cross-section minima, thereby indicating the sensitivity of pions for investigating neutron radii of nuclei.