A comparative study between slow electrons and positrons transport in solid thin films

In this work, we have conducted a comparative study between the transport of electrons and positrons in aluminum and gold solid thin films, in the examined primary energy range (0–4 keV), by using the Monte Carlo method. This comparative study has been used for three transport phenomena: transmissio...

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Bibliographic Details
Published in:Applied surface science 2009-06, Vol.255 (17), p.7471-7476
Main Authors: Bentabet, A., Fenineche, N.E., Loucif, K.
Format: Article
Language:English
Subjects:
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Condensed matter: structure, mechanical and thermal properties
Cross-disciplinary physics: materials science
rheology
Electron scattering
Exact sciences and technology
Monte Carlo simulation
Physics
Positron scattering
Thin films
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Summary:In this work, we have conducted a comparative study between the transport of electrons and positrons in aluminum and gold solid thin films, in the examined primary energy range (0–4 keV), by using the Monte Carlo method. This comparative study has been used for three transport phenomena: transmission, absorption and backscattering and it will be useful for experimenters to choose between electron or positron beams for thin film characterizations. Here, we have calculated quantities such as absorption probability, mean penetration depth, transmission probability, transmission energy distributions and backscattering coefficient, for both electron and positron. The agreement between our results and the available experimental data is found to be good within the limits of the statistical accuracy.
ISSN:0169-4332
1873-5584
DOI:10.1016/j.apsusc.2009.04.032