Figure 2

(a) The final simulated REELS spectra (red lines) and measured spectra (black lines) of Ni at 3 keV and 5 keV. Contributions from bulk and surface excitations from simulation are shown by the blue and green lines, respectively. The inset shows the elastic peak for convolution of the spectrum. (b) The corresponding ELFs of each energy obtained from the simulated REELS spectra.