Mean free path electrons in solids

Fig. 4.2 (a) Photoabsorption and electron production in a sample consisting of substrate atoms B and an adsorbate layer A. Only electrons created within a depth L from the surface contribute to the measured electron yield signal, (b) Electron mean free path in solids as function of the electron kinetic energy above the Fermi level. The shaded area represents the distribution tipically found for different materials (Reprinted from Stdhr [2], with kind permission of Springer Science (2009))... 

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