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A survey has been made of the differential scattering cross sections for 187-Mev electrons on the even-even nuclei ₁₂Mg^24, ₁₄Si^28, ₁₆S^32, ₁₈A^40, and ₂₈Sr^88. It has been possible to separate the elastic scattering from the inelastic in all cases and to resolve the inelastic groups from specific nuclear levels for at least one level in all cases. A simple Born-approximation analysis of the elastic data yields values of the effective radii and surface thicknesses of the nuclear charge densities which (if suitably corrected for failure of the Born approximation) are in substantial agreement with the results of Hahn, Ravenhall, and Hofstadter; i. e. , a radius parameter of c1. 08 A^1{3}10^-13 cm (radius to half-maximum of the charge distribution) and a surface thickness of t2. 510^-13 cm (thickness from 10% to 90% of the maximum of the charge distribution). Phenomenological analysis of the inelastic scattering along the lines laid down by Schiff yields some tentative multipolarity assignments, and application of some results of Ravenhall yields estimates of (radiative) partial level widths; for the E2 transitions these correspond to lifetimes of 1910^-13 sec (Mg 1. 37 Mev) to 1. 410^-13 sec (Sr 1. 85 Mev). The observed strengths of the transitions are compared to those predicted by Weisskopf theory.
R. Helm (Sat,) studied this question.