KRIBAA, B.; ROUABAH, Z.; LE LOIREC, C.; CHAMPION, C.; BOUARISSA, N.

doi:10.1016/j.micron.2016.04.009

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KRIBAA, B.
Materials and Electronic Systems Laboratory (LMSE)

ROUABAH, Z.
Materials and Electronic Systems Laboratory (LMSE)

LE LOIREC, C.
Département Imagerie et Simulation pour le Contrôle (CEA, LIST) [DISC (CEA, LIST)]

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Micron. 2016, vol. 87, p. 46-50

Elsevier

Résumé en anglais

Monte Carlo simulation of 1-4 keV positron backscattering from semi-infinite solid targets ranging from Be (z = 4) to Au (z = 79) with normal angle of incidence is here reported. In our study, the elastic and inelastic scattering cross sections are modeled by using various approaches based on either a classical or a quantum mechanical treatment. Calculations of positron backscattering coefficient are then reported for the solid targets of interest. The results obtained show a fairly good agreement with the data available in the literature. The dependence of the positron backscattering coefficient versus the atomic number of the solid target of interest has been investigated. In this respect, polynomial functions are proposed which does not require any recourse to Monte Carlo calculations.< Réduire

Mots clés en anglais

Polynomial functions

Monte Carlo calculation

Atoms

Backscattering

Electrons

Inelastic scattering

Intelligent systems

Positrons

Quantum theory

Backscattering coefficients

Elastic and inelastic scattering

Elastic cross sections

Inelastic cross sections

Quantum-mechanical treatments

Semi-infinite solids

Monte Carlo methods

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Positron backscattering from solid targets: Modeling of scattering processes via various approaches

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