Figure 13: The calculated Reflectivity
Energy Loss Function
Energy loss function determines how much energy is being wasted during
motion of fast-moving electrons when they incident upon a material’s
surface. The frequency at which loss of energy is maximum be recognized
as the plasma frequency. Form figure 14, plasma frequency is noted at
resonance frequency of 13.7 eV, which indicates that loss function is
maximum (with a value of 17) where absorption is found minimum.