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Untitled - IAP/TU Wien - Technische Universität Wien

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71st IUVSTA Workshop<br />

Monte Carlo simulation of supersurface electron scattering effects<br />

Mihaly Novak<br />

Institute for Nuclear Research, Hungarian Academy of Sciences<br />

H-4026 Debrecen, Bem tér 18/c, Hungary<br />

*mihaly.novak@gmail.com<br />

Supersurface electron scattering, i.e. electron energy losses and associated deflections in vacuum above the<br />

surface, was investigated by Monte Carlo simulation in reflection electron energy-loss (REELS) setup. These<br />

theoretical calculations predicted a strong structure in the detected supersurface inelastic scattering probability<br />

that was proven by experiments in case of Au sample leading to the unambiguous identification of the vacuum<br />

side electron scattering in reflection experiments [1]. These deflections, in vacuum side surface plasmon<br />

excitations, can establish a link between the detected vacuum side surface loss intensities and the differential<br />

elastic scattering cross section (DECS) resulting in the observable structure. The details and consequences of<br />

this supersurface electron scattering will be presented together with a Monte Carlo simulation study on the<br />

energy, geometry and material dependence of these complex phenomena.<br />

References<br />

[1] W. S. M. Werner, M. Novak, F. Salvat-Pujol, J. Zemek, P. Jiricek, Phy. Rev. Letters 110 (2013) 086110<br />

21

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