Nuclear sizes of Ca40,42,44,48 from elastic scattering of 104 MeV alpha particles. I. Experimental results and optical potentials

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. NUCLEAR REACTIONS Ca40,42,44,48(α, α), Eα=104 MeV, measured σ(θ); θc.m.=3-110°; enriched targets; optical model analysis using Fourier-Bessel method, deduced isotopic differences in the real potentials.