Coulomb Sum Rule forCa40,Ca48, andFe56for|q|<~550MeV/c

Abstract
Deep-inelastic electron scattering from Ca40, Ca48, and Fe56 has been measured at 60°, 90°, and 140° and at inelasticities up to and including the Δ(3,3) region. Longitudinal response functions in the momentum interval 300 MeV/c<|q|<600 MeV/c were extracted. The experimental Coulomb sum rule is observed between the two calcium isotopes.