Benchmarking the evaluated proton differential cross sections suitable for the EBS analysis of nat Si and 16 O

Kokkoris, M.; Dede, Stefania; Kantre, Karim-Alexandros; Lagoyannis, A.; Ntemou, E.; Paneta, V.; Preketes–Sigalas, K.; Provatas, G.; Vlastou, R.; Radović, Iva Bogdanović; Siketić, Zdravko; Obajdin, Nevena

doi:10.1016/j.nimb.2017.05.021

Cited by 10 publications

(4 citation statements)

References 16 publications

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“…Here ε 0 is the vacuum permittivity, Ω is the solid angle, Z 1 and Z 2 are the charge numbers of the projectile and the target atom, respectively, and E CM is the particle kinetic energy in the CM reference frame. The pure Rutherford cross-section often deviates from the experimental one [15] and modifications need to be taken into account. The low energy corrections of the cross-section are based on the Andersen shielding factor [16].…”

Section: Methodsmentioning

confidence: 99%

Numerical simulation of proton backscattering spectra in GEANT4 toolkit

Lingis,

Gaspariūnas,

Kovalevskij

et al. 2024

physics

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Rutherford backscattering spectroscopy (RBS) is a widely used technique for the atomic-scale analysis of sample composition, lattice displacement and impurity profiling. RBS is based on the elastic scattering of incident charged particles by target nuclei and the subsequent detection of scattered particles. The interpretation of RBS spectra, however, poses challenges due to overlapping peaks, corresponding to scattering from different atomic species, and uncertainties from energy loss, scattering geometry and detector response. To address this, an open source simulation model based on the versatile GEANT4 simulation toolkit has been developed. The flexibility of the open source enables users to tailor the model to its specific requirements, such as the use of specific particle stopping powers, cross-sections, and physics processes. This work presents the results of the comparison between the experimental and simulated backscattering spectra in crystalline silicon, silicon carbide and silicon dioxide samples by 1–2.5 MeV energy protons, obtained in random orientation conditions. The results demonstrate the capability of the model to accurately simulate backscattering spectra in both amorphous materials and single crystals. The overall agreement between the simulated and experimental results is highly promising for future development and use in the interpretation and simulation of RBS spectra.

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Section: Methodsmentioning

confidence: 99%

Numerical simulation of proton backscattering spectra in GEANT4 toolkit

Lingis,

Gaspariūnas,

Kovalevskij

et al. 2024

physics

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“…The measured cross sections are validated by a benchmarking exercise [38,39], in which the cross sections are used in an independent experiment. For NRA cross sections, this almost always consists in obtaining thick target NRA spectra from a well-defined (often mono-elemental) target and verifying the extent to which the measured cross sections reproduce the observed spectra when included in an established NRA simulator such as SIMNRA.…”

Section: -Benchmarking the Evaluated Cross Sectionsmentioning

confidence: 99%

27 Al(d,alpha) and 27 Al(d,p) Nuclear Reaction Cross Sections at Ed<2MeV Measured at Three Backward Scattering Angles Related to NRA

Salimi¹,

Kakuee²,

Masoudi³

et al. 2021

Preprint

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The cross-sections of deuteron-induced nuclear reactions suitable for ion beam analysis, measured in different laboratories, are often significantly different. In the present work, differential cross-sections of 27 Al(d,p) and 27 Al(d,α) reactions were measured, and the cross sections benchmarked with thick target spectra obtained from pure aluminium for the first time in two independent laboratories. The 27 Al(d,p) and (d,alpha) differential cross-sections were measured between 1.4 and 2 MeV at scattering angles of 165°, 150°, and 135° in the VDGT laboratory in Tehran (Iran), and the same measurements for detector angle of 150° were repeated from scratch, including target making, with independent equipment on the SAFIR platform at INSP in Paris (France). The results of these two measurements at 150° are in good agreement, and for the first time a fitted function is proposed to describe the Al-cross sections for which no suitable theoretical expression exists. The obtained differential cross-sections were validated through benchmarking, by fitting with SIMNRA deuteron-induced particle spectra obtained from a high purity bulk Al target at both labs for deuteron incident energies between 1.6 and 2 MeV. The thick target spectra are well-reproduced. The evaluated and benchmarked cross sections have been uploaded to the ion beam analysis nuclear data library database (www-nds.iaea.org/ibandl/).

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“…Pragmatically, the spectrum is calculated and if the match is reasonable then so are the cross-sections. Kokkoris et al (2017) 84 have helpfully quantified this judgment for 3 MeV protons on Si and O at various scattering angles: we will use these results in Uncertainties. Figure 5a can be regarded as a benchmark for the sum of all the scattering cross-section functions used since the sample is a) uniform and b) has a composition well-determined (prior to IBA) by EPMA.…”

Section: Benchmarking Ebs Scattering Cross-sectionsmentioning

confidence: 99%

On the accuracy of Total-IBA

Jeynes

Palitsin

Kokkoris

et al. 2020

Nuclear Instruments and Methods in Physics Research Section B:

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"Total-IBA" implies the synergistic use of multiple IBA techniques. It has been claimed that Total-IBA inherits the accuracy of the most accurate IBA technique used. A specific example is now given of this where (in vacuo) EBS/PIXE of a glass sample uniform in depth is validated against absolutely calibrated EPMA of the same sample. The EPMA results had a mass closure gap of 2.0±0.6 wt%; the full PIXE analysis determined the composition of this missing 2 wt%. The PIXE calibration was against a single certified glass sample, with uncertainties per line ~10 %. Benchmarking also demonstrates ~10% underestimation of the Si scattering cross-section at proton energies ~3 MeV. But the Total-IBA determination of the silica content had a low standard uncertainty of about 2 %. This is due to the strong constraints of both the chemical prior and also the mass closure properties of the EBS. Irradiation-induced sodium migration in this soda-lime glass is explored.

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Benchmarking the evaluated proton differential cross sections suitable for the EBS analysis of nat Si and 16 O

Cited by 10 publications

References 16 publications

Numerical simulation of proton backscattering spectra in GEANT4 toolkit

Numerical simulation of proton backscattering spectra in GEANT4 toolkit

27 Al(d,alpha) and 27 Al(d,p) Nuclear Reaction Cross Sections at Ed<2MeV Measured at Three Backward Scattering Angles Related to NRA

On the accuracy of Total-IBA

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Benchmarking the evaluated proton differential cross sections suitable for the EBS analysis of nat Si and 16 O

Cited by 10 publications

References 16 publications

Numerical simulation of proton backscattering spectra in GEANT4 toolkit

Numerical simulation of proton backscattering spectra in GEANT4 toolkit

27 Al(d,alpha) and 27 Al(d,p) Nuclear Reaction Cross Sections at Ed&lt;2MeV Measured at Three Backward Scattering Angles Related to NRA

On the accuracy of Total-IBA

Contact Info

Product

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27 Al(d,alpha) and 27 Al(d,p) Nuclear Reaction Cross Sections at Ed<2MeV Measured at Three Backward Scattering Angles Related to NRA