Longitudinal and transverse response functions in ${}_{}{}^{56}{}_{}{}^{}\mathrm{Fe}$(e,e’) at momentum transfer near 1 GeV/c

Inclusive electron-scattering cross sections have been measured for ${}_{}{}^{56}{}_{}{}^{}\mathrm{Fe}$ in the quasielastic region at electron energies between 0.9 and 4.3 GeV, at scattering angles of 15° and 85°. Longitudinal and transverse response functions at a q of 1.14 GeV/c have been extracted using a Rosenbluth separation. The experimental Coulomb sum has been obtained with aid of an extrapolation. The longitudinal response function, after correction for Coulomb distortion, is lower than quasifree-scattering-model predictions at the quasielastic peak and on the high-ω side.