Studies of Elastic Scattering of Protons and Deuterons by Calcium Isotopes

Angular distributions of elastically scattered protons and deuterons from enriched isotopic targets of ${\mathrm{Ca}}^{42}$, ${\mathrm{Ca}}^{44}$, and ${\mathrm{Ca}}^{48}$ have been measured at bombarding energies of 9 and 12 MeV, between 30° and 168°. The data are analyzed in terms of the optical model, with particular emphasis on the importance of a symmetry term in the proton potential. The energy dependence of the parameters is also discussed. The results are compared with those obtained from earlier work on isotopes of nickel and copper. An attempt is made to find systematic trends in the deuteron potential and a comparison is made with earlier measurements of deuteron scattering from ${\mathrm{Ca}}^{40}$ and from Ni and Cu isotopes.