OPTICAL-MODEL FOR ELASTIC-SCATTERING OF 10 TO 15 MEV POLARIZED DEUTERONS FROM MEDIUM-WEIGHT NUCLEI

Differential cross sections and all four analysing powers have been measured for deuteron elastic scattering from 46Ti, 52Cr, 54Fe, 68Zn and 90Zr at Ed = 10.0 MeV, 68Zn and 90Zr at 12.0 MeV, and 46Ti and 54Fe at 13.0 MeV. These data, and other data from the literature for deuteron scattering from 52Cr, 56Fe, 60Ni, 90Zr and 122Sn at Ed = 15 MeV, were analyzed in terms of an optical potential containing central, spin-orbit (L·s) and tensor (Tr terms, all of which are complex. All of the data were adequately reproduced by the calculations, except for the tensor analysing powers for the N = 28 nuclei 52Cr and 54Fe. The best-fit L·s potentials have very small diffusenesses, and the real part of the Tr tensor potential is found to be much smaller than the imaginary part. There is some evidence that the Woods-Saxon potential shape is inadequate to describe the real central potentials for deuteron energies more than 8 or 9 MeV above the Coulomb barrier. © 1979.