Nuclear sizes ofCa40,42,44,48from elastic scattering of 104 MeV alpha particles. I. Experimental results and optical potentials

Abstract
Differential cross sections for elastic scattering of 104 MeV α particles from Ca40,42,44,48 have been measured with high angular accuracy over a wide angular range. Optical model analysis based on a Fourier-Bessel description of the real potential reveals isotopic differences which, in particular for Ca48, indicate a small neutron skin.