Abstract
Differential cross sections for elastic and inelastic scattering of 104 MeVα-particles from204,206,208Pb were measured with high angular accuracy. The experimental results were analysed on the basis of a semimicroscopic folding model in order to determine the matter distributions at the nuclear surface and the transition densities. Using phenomenological parametrizations of the densities the analyses of elastic scattering yield rms radii of 〈r 2〉1/2=5.55±0.06 (204Pb), 5.57±0.06 (206Pb), 5.63±0.05 (208Pb) fm. Various sensitivities affecting the results were studied. From the inelastic cross sections for the 3 1 − -states octupole transition probabilities and transition radii were derived by using different methods proposed in literature.
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