Analysis of Heavy Metals in Soils of Enyigba and Abakaliki Using Proton Induced X-Ray Emission (Pixe) Spectroscopy

Wilberforce, J.; Nwabue, F. I.; Afiukwa, J. N.

doi:10.5539/ep.v1n2p183

Cited by 7 publications

(2 citation statements)

References 15 publications

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“…The widespread implementation of PIXE spectroscopy has been vastly reported on, and largely relies on the existence of reliable theoretical predictions of X-ray production cross section (XPCS) data at usual PIXE energies (1.0 -3.0 MeV). These theoretical formulations include widely adopted frameworks such as the ECPSSR theory by Brandt and Lapicki, which is based on the Plane Wave Born Approximation (PWBA) [10][11][12][13]. The ECPSSR model essentially extends the first order Born approximation by including corrections for Energy loss (E) as the projectile traverses the Coulomb potential (C) region of the target electron cloud, causing a Perturbation in the Stationary State (PSS) of the target atom.…”

Section: Introductionmentioning

confidence: 99%

Semi-empirical parameterization of HI/p L-shell X-ray production cross section ratios in Bi for Heavy Ion PIXE

Masekane,

Msimanga,

Radović

et al. 2023

Preprint

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Quantitative analysis of materials from Heavy Ion PIXE spectra remains impeded by the lack of reliable X-ray production cross section (XPCS) data. Although efforts at experimental Heavy Ion induced XPCS measurements still continue, Multiple Ionisation (MI) effects, which are not fully described by theory, render simulations of Heavy Ion PIXE data unreliable for large Z 1 /Z 2 collisions, especially at low energies. This is also exacerbated by the random selection of projectile-target combinations for measured and reported experimental data available to validate theory. This study explored heavy ion induced X-ray production cross section deviations from those induced by protons at the same ion velocity. This enabled evaluations of the degree to which cross sections are enhanced through MI effects, with the aim of predicting XPCS due to heavy ion impact. The evaluation was carried out through the scaling of experimental heavy ion to theoretical proton cross section ratios (R), which were then used for the interpolation of XPCS in´missing´in´missing´ regions. Here we present measurements of heavy ion induced total L-shell XPCS in Bi, carried out to determine HI/p MI induced deviations due to C, F, Cl and Ti projectiles at an ion velocity range of 0.2-1.0 (MeV/nucleon).

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Section: Introductionmentioning

confidence: 99%

Semi-empirical parameterization of HI/p L-shell X-ray production cross section ratios in Bi for Heavy Ion PIXE

Masekane,

Msimanga,

Radović

et al. 2023

Preprint

View full text Add to dashboard Cite

show abstract

“…The widespread implementation of PIXE spectroscopy has been vastly reported on, and largely relies on the existence of reliable theoretical predictions of X-ray production cross section (XPCS) data at usual PIXE energies ((1.0–3.0) MeV). These theoretical formulations include widely adopted frameworks such as the ECPSSR theory by Brandt and Lapicki, which is based on the Plane Wave Born Approximation (PWBA) 12 – 15 . The ECPSSR model essentially extends the first order Born approximation by including corrections for Energy loss (E) as the projectile traverses the Coulomb potential (C) region of the target electron cloud, causing a Perturbation in the Stationary State (PSS) of the target atom.…”

Section: Introductionmentioning

confidence: 99%

Semi-empirical parameterization of HI/p L-shell X-ray production cross section ratios in Bi for Heavy Ion PIXE

Masekane,

Msimanga,

Bogdanović Radović

et al. 2023

Sci Rep

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Quantitative analysis of materials from Heavy Ion PIXE spectra remains impeded by the lack of reliable X-ray production cross section (XPCS) data. Although efforts at experimental Heavy Ion induced XPCS measurements still continue, Multiple Ionisation (MI) effects, which are not fully described by theory, render simulations of heavy ion PIXE data unreliable for large Z1/Z2 collisions, especially at low energies. This is also exacerbated by the random selection of projectile-target combinations for measured and reported experimental data available to validate theory. This study explored heavy ion induced X-ray production cross section deviations from those induced by protons at the same ion velocity. This enabled evaluations of the degree to which cross sections are enhanced through MI effects, with the aim of predicting XPCS due to heavy ion impact. The evaluation was carried out through the scaling of experimental heavy ion to theoretical proton cross section ratios (R), which were then used for the interpolation of XPCS in the same target element for ‘missing’ projectiles within the range of evaluation. Here we present measurements of heavy ion induced total L-shell XPCS in Bi, carried out to determine HI/p MI induced deviations due to C, F, Cl and Ti projectiles at an ion velocity range of (0.2–1.0) MeV/nucleon.

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Bioaccumulation Factors and Pollution Indices of Heavy Metals in Selected Fruits and Vegetables From a Derelict Mine and Their Associated Health Implications

Oti¹

2015

International Journal of Environment and Sustainability

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Analysis of Heavy Metals in Soils of Enyigba and Abakaliki Using Proton Induced X-Ray Emission (Pixe) Spectroscopy

Cited by 7 publications

References 15 publications

Semi-empirical parameterization of HI/p L-shell X-ray production cross section ratios in Bi for Heavy Ion PIXE

Semi-empirical parameterization of HI/p L-shell X-ray production cross section ratios in Bi for Heavy Ion PIXE

Semi-empirical parameterization of HI/p L-shell X-ray production cross section ratios in Bi for Heavy Ion PIXE

Bioaccumulation Factors and Pollution Indices of Heavy Metals in Selected Fruits and Vegetables From a Derelict Mine and Their Associated Health Implications

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