EBIT X-ray data as a function of the electron beam energy (abscissa) and the photon energy (ordinate), corrected for the carbon foil transmission and the varying beam current. Color shows the number of counts. Photon energies of the main 3d−2p and 3s−2p transitions of Ne-like Fe are marked with the dashed lines. Upper and right panels: count profiles projected along the beam energy and the photon energy, respectively.