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In this work we present a numerical simulation of REELS-spectrum for noble metals, Au and Ag. The calculation is based on an electron-surface inelastic scattering model previously developed. The differential inelastic cross section is obtained from an inhomogeneous electron self-energy in the surface region, which provides full information of the dependency of the total and differential cross section on the kinetic energy, the distance from the surface and the moving direction of electrons, accommodating the formulation to the practical situation in surface electron spectroscopes. A novel Monte Carlo simulation code of electron interaction with a surface incorporating the local scattering mean free path has been developed. The comparison of the simulated REELS-spectra with the experimental measurements shows a remarkable agreement on the spectrum shape, which then confirms that the present model for electron-surface inelastic scattering is quite reasonable. The simulation has further shown the component to surface excitation due to the individual scattering processes along trajectory part, i.e., the loss in vacuum before reflection, the loss in vacuum after reflection and loss in metal events.
In this work we present a numerical simulation of REELS-spectrum for noble metals, Au and Ag. The calculation is based on an electron-surface inelastic scattering model previously developed. the surface region, which provides full information of the dependency of the total and differential cross section on the kinetic energy, the distance from the surface and the moving direction of electrons, accommodating the information to the practical situation in surface electron spectroscopes. A novel Monte Carlo simulation code of electron interaction with a surface incorporating the local scattering mean free path has been developed. The comparison of the simulated REELS-spectra with the experimental measurements shows a remarkable agreement on the spectrum shape, which then confirms that the present model for electron -sface inelastic scattering is quite reasonable. The simulation has further s hown the component to surface excitation due to the individual scattering processes along trajectory part, ie, the loss in vacuum before reflection, the loss in vacuum after reflection and loss in metal events.