High-Energy Electron Scattering and Nuclear Structure Determinations. II

Abstract

Elastic scattering measurements have been carried out with electrons in ${\mathrm{Au}}^{197}$ at energies of 84, 126, 154, and 183 Mev and in ${\mathrm{Pb}}^{208}$ at 84, 153, and 186 Mev. Diffraction effects are observed which appear to vary with momentum and angular position as if a fundamental parameter $psin\left(\frac{\theta }{2}\right)$ were equal to constant for a given diffraction feature. Such a behavior would be predicted by the Born approximation. A comparison of the scattering in ${\mathrm{Au}}^{197}$ and ${\mathrm{Pb}}^{208}$ suggests that inelastic scattering does not materially influence the scattering curves presented. The appearance of diffraction effects indicates a model more nearly uniform in charge density than early tentative conclusions based on Born approximation calculations.