Abstract
The cross sections for inelastic proton scattering from 90Zr have been measured for levels up to 7.5 MeV excitation energy with a resolution of 12 to 16 keV. The measured angular distributions are compared with macroscopic DWBA calculations to determine L-values and deformation parameters. New spectroscopic information is obtained for levels above 4.0 MeV excitation energy, where conflicting information existed. The influence of two-step processes is investigated for some states. A number of states are investigated with microscopic distorted-wave calculations, which include antisymmetrization, using wave functions from broken-pair calculations. Reasonable agreement is obtained for the low-lying collective states and the 5 − states when normalization factors for the transition amplitudes are used. The (p, d)(d, p) process is found to be important in the excitation of the members of the ν¦1g 9 2 −12d 5 2 〉 multiplet at 25 MeV incident energy, in contrast to results found at 65 MeV where such a process plays a minor role.
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