ELASTIC PI-+/- SCATTERING ON HE-4, C-12, O-16 AND CA-40

A calculation of π+ and π- elastic scattering in the resonance region by four spin-zero nuclei is presented. A non-static first order optical potential which includes binding corrections and short range correlations is used. The comparison with the experimental data shows rather good agreement at and above the resonance but elastic scattering at lower energies is largely overestimated. The calculated angular distributions are more sensitive to the variations of the rms radius than to variations of the surface thickness of the nucleus. © 1979.