New Geant4 cross section models for PIXE simulation

Abdelouahed, H. Ben; Incerti, S.; Mantero, A.

doi:10.1016/j.nimb.2008.11.025

Cited by 17 publications

(7 citation statements)

References 40 publications

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“…This set covers the 0.1-100 MeV range for K and L shells, and the 0.1-10 MeV range for M shells. The third set, named ''ECPSSR_Analytical'', is based on an in-house implementation of the ECPSSR theory proposed by Ben Abdelouahed for the description of K and L shells ionisation for incident protons (see more details in [3,21]) and it has a larger energy range applicability. It is used by default out of the energy boundaries of the other sets.…”

Section: Simulation Of Pixe Using Geant4 Electromagnetic Physics Consmentioning

confidence: 99%

Comparison of experimental proton-induced fluorescence spectra for a selection of thin high-Z samples with Geant4 Monte Carlo simulations

Incerti

Barberet

Devès

et al. 2015

Nuclear Instruments and Methods in Physics Research Section B:

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Section: Simulation Of Pixe Using Geant4 Electromagnetic Physics Consmentioning

confidence: 99%

Comparison of experimental proton-induced fluorescence spectra for a selection of thin high-Z samples with Geant4 Monte Carlo simulations

Incerti

Barberet

Devès

et al. 2015

Nuclear Instruments and Methods in Physics Research Section B:

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“…However, this model does not deliver the desired results, which affects the possibility to use it. To address the problem, in 2008 a new extension from the thesis work of Ben Abdelouahed23, 24 has been proposed in order to calculate proton and alpha K‐shell ionisation cross‐sections according to the ECPSSR theory25, 26 and L i ‐shells ionisation cross‐sections according to an empirical model from Orlic et al 27, 28 The models proposed in Refs 23,24 were suited for the low‐energy regime and their full availability for Geant4 user applications was still at a beta version as underlined in Ref 29.…”

Section: Status Of Pixe Simulation In Geant4 Em Subpackagesmentioning

confidence: 99%

“…As explained in Ref 24, the ECPSSR theory is nowadays the most acknowledged theory by the scientific community able to reproduce shell ionisation cross‐section values. Consequently, ECPSSR has been considered to be the best choice for K‐ and L i ‐shell cross‐sectional calculations in Geant4.…”

Section: K‐ and Li‐shell Ionisation Cross‐sectional Modelsmentioning

confidence: 99%

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PIXE simulation in Geant4

et al. 2011

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Geant4 is a general purpose and open source C + + Monte Carlo simulation toolkit, widely used in the scientific community. It is able to simulate physical interactions of particles through matter. According to the user's needs, models for the simulation of electromagnetic (EM) interactions are provided in two Geant4 subpackages, the 'standard' EM subpackage, well suited for a wide range of applications and the 'low-energy' EM subpackage, able to reach the electronVolt regime. Particle-induced X-ray emission (PIXE) is a well known and a very useful technique for quantitative elemental analysis in environmental, archaeological, biological, medical and space applications. An atomic de-excitation module is part of the Geant4 'low-energy' EM subpackage since 1999 and has been validated in recent years. PIXE simulation has been included in this subpackage in 2001 and new ionisation cross-sectional models following the ECPSSR theory have been added for the PIXE simulation in 2008. In 2010, these models have been further extended to higher energies. In this work, we present new results on the verification of these models and an overview of the new interface to PIXE modelling prepared for the recent public release of the Geant4 toolkit (December 2010) allowing a unified usage of the Geant4 de-excitation module by both 'standard' and 'low-energy' subpackages. Copyright © 2011 John Wiley & Sons, Ltd

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“…The 12 comparisons are performed for a large set of sample materials spanning a broad range of 13 atomic numbers. The two alternative PIXE cross sections approaches (Geant4 and ANSTO) have 14 been compared to existing experimental measurements performed at ANSTO with gold, 15 tantalum and cerium targets of interest for nanomedicine applications. The results show that, 16 while the alternative approaches produce equivalent results for vacancies generated in the K 17 and L shell, differences are evident in the case of M shell vacancies.…”

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Latest Geant4 developments for PIXE applications

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Cohen

Siegele

et al. 2018

Nuclear Instruments and Methods in Physics Research Section B:

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We describe the recent inclusion in Geant4 of state-of-the-art proton and alpha particle shell ionisation cross sections based on the ECPSSR approach as calculated by Cohen et al., called here ANSTO ECPSSR. The new ionisation cross sections have been integrated into Geant4. We present a comparison of the fluorescence X-ray spectra generated by the ANSTO ECPSSR set of cross sections and, alternatively, the currently available sets of Geant4 PIXE cross sections. The comparisons are performed for a large set of sample materials spanning a broad range of atomic numbers. The two alternative PIXE cross sections approaches (Geant4 and ANSTO) have been compared to existing experimental measurements performed at ANSTO with gold, tantalum and cerium targets of interest for nanomedicine applications. The results show that, while the alternative approaches produce equivalent results for vacancies generated in the K and L shell, differences are evident in the case of M shell vacancies. This work represents the next step in the effort to improve the Geant4 modelling of the atomic relaxation and provide recommended approaches to the Geant4 user community. This new Geant4 development is of interest for applications spanning from life and space to environmental science. Abstract 7We describe the recent inclusion in Geant4 of state-of-the-art proton and alpha particle shell 8 ionisation cross sections based on the ECPSSR approach as calculated by Cohen et al., called 9 21 Keywords 22 Geant4, PIXE, ionisation cross sections, ECPSSR. 23 detector and to reduce the low energy X-ray yield from light elements such as the underlying Si 126 in some of the samples, a 100µm thick Mylar absorber (or filter) was placed in front of the 127 detector. The data were collected using the Data Acquisition System mpsys4 from Melbourne 128 University together with a Canberra Model 2060 digital signal processor. The irradiated samples 129 were 100nm thick Au layer on silicon and 25nm TaO layer on graphite. Additionally, a sample of 130 CeO 2 embedded in a boron oxide pellet was used. 131 4. Results 132 4.1. Ionisation cross section comparison 133 The proposed ANSTO ionisation cross sections have been calculated for all elements. As 134 example Figures 1 and 2 show the cross sections for a gold target against the kinetic energy of 135 incident protons and alpha particles, respectively.

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New Geant4 cross section models for PIXE simulation

Cited by 17 publications

References 40 publications

Comparison of experimental proton-induced fluorescence spectra for a selection of thin high-Z samples with Geant4 Monte Carlo simulations

Comparison of experimental proton-induced fluorescence spectra for a selection of thin high-Z samples with Geant4 Monte Carlo simulations

PIXE simulation in Geant4

Latest Geant4 developments for PIXE applications

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