Monte Carlo simulations of positrons transmission and backscattering probabilities in nickel

Monte Carlo simulations for positron backscattering from the semi-infinite nickel with normal angle of incidence and the transmission through nickel foils of isotropically implanted positrons from a 22Na β + source is reported. The elastic scattering cross section, have been obtained from Rutherford...

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Bibliographic Details
Published in:Nuclear instruments & methods in physics research. Section B, Beam interactions with materials and atoms Beam interactions with materials and atoms, 2006-02, Vol.243 (2), p.272-276
Main Author: Aydın, Asuman
Format: Article
Language:English
Subjects:
Backscattering
Implantation
Monte Carlo simulations
Nickel
Positron scattering
Transmission
β
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Summary:Monte Carlo simulations for positron backscattering from the semi-infinite nickel with normal angle of incidence and the transmission through nickel foils of isotropically implanted positrons from a 22Na β + source is reported. The elastic scattering cross section, have been obtained from Rutherford differential cross section where the numerical coefficient in the atomic screening parameter and spin-relativistic correction factor is taken to be variable. Inelastic scattering model was employed to simulate the energy loss using Gryzinski’s semi-empirical expression and Liljequist and Gryzinski models to calculate the total inelastic scattering cross section. The simulated results and the available experimental data are found to be in reasonable agreement.
ISSN:0168-583X
1872-9584
DOI:10.1016/j.nimb.2005.10.002