ELASTIC SCATTERING OF 58Ni ON 46Ti AT ENERGIES NEAR THE COULOMB BARRIER: SEARCH FOR RESONANT STATES

Abstract

In a search for possible resonant behavior in medium and heavy composite systems, the 46Ti(58Ni, 58Ni)46Ti elastic scattering was studied in the 58 Ni incident energy range from 216.2 to 240 MeV. A kinematic coincidence technique employing position sensitive silicon detectors was used to obtain the mass identification of the binary events. Evidence was found for two structures of non-statistical nature in the elastic excitation function at, respectively, incident 58 Ni energies of 223.9 and 227.4 MeV (Ecm=99.0 and 100.6 MeV). A statistical analysis of the corresponding angular distributions disclosed periodical behavior analogous to that caused by single partial waves of J=(36 ± 1) and (47 ± 1), respectively.