Monte Carlo calculations of 50 eV-1 MeV positrons in aluminum

Ozmutlu, E.N.; Aydın, Asuman

doi:10.1016/0969-8043(94)90236-4

Cited by 11 publications

(4 citation statements)

References 23 publications

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“…16), compared with results of PENELOPE [3], and non-relativistic calculation with TREKIS [6]. (b) Corresponding mean free path for electrons and positrons, also compared to the empirical atomic cross section RBEB for electrons [29], and results from [48] for positrons. For positrons, the agreement with other models is just as good [48]; as expected, the positron inelastic mean free path closely coincides with the electron one down to low energies, where it becomes slightly shorter [3].…”

Section: Electrons and Positronsmentioning

confidence: 99%

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Analytically solvable model of scattering of relativistic charged particles in solids

Medvedev¹,

Волков²

2020

J. Phys. D: Appl. Phys.

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We propose an analytically solvable model of the differential and total inelastic cross sections, mean free paths, and energy losses of charged projectiles (electrons, positrons, protons, ions, etc) within a unified framework. It is applicable within a broad range of incident energies (from 30–50 eV up to GeV in a case of an electron). Only the optical data are used as an input, without any ad-hoc correction terms, splitting into close and distant collisions, or fitting and adjustable parameters. We demonstrate that the derived expressions are in a very good agreement with other more complex numerical models and experimental data. Application of the derived formulae greatly saves computational time of evaluation of cross sections with respect to the numerical integration required by other models.

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Section: Electrons and Positronsmentioning

confidence: 99%

“…(a) Cross sections of electron inelastic scattering in solid aluminum calculated with equation (16), compared with results of PENELOPE[3], and non-relativistic calculation with TREKIS[6]. (b) Corresponding mean free path for electrons and positrons, also compared to the empirical atomic cross section RBEB for electrons[29], and results from[48] for positrons.…”

mentioning

confidence: 99%

Analytically solvable model of scattering of relativistic charged particles in solids

Medvedev¹,

Волков²

2020

J. Phys. D: Appl. Phys.

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“…[ 4,5,6]). For example, In order to obtain the defect depth profile from the measured variation of annihilation parameters as a function of the incident positron energy, knowledge of the positron implantation profile is required [7][8][9][10][11][12]. The defect profile induced by the different surface processes is an interesting topic for study and our knowledge about the so called subsurface zone (SZ) is still insufficient.…”

Section: Introductionmentioning

confidence: 99%

Verification Makhov,s profile for slow positron in Germanium

Allah¹

2023

Tikrit J. Pure Sci.

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In this paper the mean penetration depths z0 and Makhov (Implantation) profile I(z,E) were evaluated for low energies positrons(1.5-30/keV)by using a distribution function of Valkealahti - Nieminen for Germanium for different thicknesses:0.2, 0.4,0.8,1.2,1.4,1.6 μm. The obtained results reveals that the values of Makhov,s profile decreased exponentialy with increasing the positron energy and profile depths increasing linearly with increasing the incident energy. The shape of the Makhov,s profile reflects the shape of the energy spectrum of the positrons, which indicates the annihilation of positrons inside the material where its wavefunction is delocalized.

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“…Gryzinski's semi-empirical expression [19] is used to simulate the energy loss due to inelastic scattering, and Liljequist model to calculate the total inelastic scattering cross section. The detailed description of the Monte Carlo code and the calculation of cross sections were reported elsewhere [20][21][22][23]. The model is based on the combined use of Gryzinski's inner-shell electron excitation function in inelastic scattering processes.…”

Section: Inelastic Scattering Modelsmentioning

confidence: 99%

Monte Carlo study of medium-energy electron penetration in aluminium and silver

Aydın

Peker

2015

Nukleonika

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Abstract. Monte Carlo simulations are very useful for many physical processes. The transport of particles was simulated by Monte Carlo calculating the basic parameters such as probabilities of transmitted-refl ected and angular-energy distributions after interaction with matter. Monte Carlo simulations of electron scattering based on the single scattering model were presented in the medium-energy region for aluminium and silver matters. Two basic equations are required the elastic scattering cross section and the energy loss. The Rutherford equation for the different screening parameters is investigated. This scattering model is accurate in the energy range from a few keV up to about 0.50 MeV. The reliability of the simulation method is analysed by comparing experimental data from transmission measurements.

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Monte Carlo calculations of 50 eV-1 MeV positrons in aluminum

Cited by 11 publications

References 23 publications

Analytically solvable model of scattering of relativistic charged particles in solids

Analytically solvable model of scattering of relativistic charged particles in solids

Verification Makhov,s profile for slow positron in Germanium

Monte Carlo study of medium-energy electron penetration in aluminium and silver

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