Elastic scattering of electrons on $sup 58$Ni at high momentum transfer

An elastic electron scattering experiment on $sup 58$Ni was carried out at very high momentum transfer in order to determine the fine structure of the nuclear charge density rho(r) with small error bars by an independent model data analysis. Preliminary results obtained from a phenomenological analysis show a weak structure in reasonably agreement with Hartree-Fock calculation. (FR)