Comparison of giant multipole resonances of multipolarity E1 to E4 in (58)Ni (T(0) = 1) and (60)Ni (T(0) = 2) with inelastic electron scattering
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The cross section for electron scattering from the isotopes (58)Ni and (60)Ni has been measured with electrons of 103 MeV at scattering angles of 45, 60,75, and 105° between 3 and 50 MeV excitation energy. Resonances or resonancelike structures at approximate excitation energies of (7-8) MeV, 13 MeV, (16-17) MeV, (18-19) MeV, 27 MeV, 32 MeV, and 40 MeV were classified on the basis of their momentum transfer dependence and discussed in the framework of the shell model. Difficulties in the extraction of the cross section and model dependencies of the interpretation are discussed.
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