We have reanalyzed the ${}_{}{}^{16}{}_{}{}^{}\mathrm{O}$+${}_{}{}^{40}{}_{}{}^{}\mathrm{Ca}$ elastic scattering data at $E_{\mathrm{c}.\mathrm{m}.\mathrm{}}=35.7\mathrm{}$ MeV with both full and restricted model-independent searches and we find potentials which do not fall within the error bars of a spline model analysis previously published in this journal. The potentials we find are much smoother, departing only slightly in the surface from a Woods-Saxon shape. Error bars determined for potentials are of restricted significance.

NUCLEAR REACTIONS ${}_{}{}^{16}{}_{}{}^{}\mathrm{O}$+${}_{}{}^{40}{}_{}{}^{}\mathrm{Ca}$ elastic scattering, $E_{\mathrm{c}.\mathrm{m}.\mathrm{}}=35.7\mathrm{}$ MeV; optical model analyses with full and restricted spline model representation.

• Received 15 March 1982

DOI:https://doi.org/10.1103/PhysRevC.26.1766