Nuclear sizes of /sup 40,42,44,48/Ca from elastic scattering of 104 MeV alpha particles. I. Experimental results and optical potentials

Differential cross sections for elastic scattering of 104 MeV ..cap alpha.. particles from /sup 40,42,44,48/Ca 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 /sup 48/Ca, indicate a small neutron skin.