High-resolution study ofPb208with 35-MeV protons

The inelastic scattering of 35-MeV protons by ${}_{}{}^{208}{}_{}{}^{}\mathrm{Pb}$ was measured with a resolution of 5-8 keV. Angular distributions of states up to an excitation energy of about 8 MeV were obtained. Collective model calculations enabled the $l$ transfers of many states to be identified. The possibility of excitation of $1^{+}$ states is discussed. Microscopic model calculations were made with both phenomenological and theoretical information. The large number of observed unnatural parity states permitted the role of noncentral forces in these transitions to be investigated.