Abstract

The elastic scattering of 79.5 MeV 11B ions has been studied for seven targets ranging in mass from 24Mg to 197Au and of 87.5 MeV 10B ions for three of these targets ( 24, 25Mg, 60Ni). Angular distributions were measured from ~10° c.m. in steps of 0.5°, to angles beyond 40° c.m. where the elastic cross sections are ≲ 10 −3 of the Rutherford values (except for 197Au). Inelastic data for exciting the lowest 2 + states of 24,26Mg and 60Ni were also obtained. Important odd- A-even- A differences are observed in the 11B elastic angular distributions for the Mg and Al targets; for 10B scattering these are obscured by projectile quadrupole moment effects on the elastic scattering. The elastic data were analyzed using the optical model with potentials of both Woods-Saxon and double-folding form. The data for both 10B and 11B are consistent with the potential obtained in the folding model with the M3Y interaction without renormalization. The inelastic data were analyzed by the distorted-waves method.

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