Measurement of L-shell X-ray production cross sections in 89Y, 158Gd and 209Bi due to 0.3 MeV/u – 1.0 MeV/u 12C ions

Ejeh, E.O.; Hlatshwayo, Thulani Thokozani; Madhuku, M.; Legodi, M.J.; Msimanga, M.

doi:10.1016/j.apradiso.2021.109930

Cited by 6 publications

(4 citation statements)

References 37 publications

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“…As shown in Fig. 3 , ratios of experimental XPCS comparing our data for C projectiles in Bi showed varying degrees of agreement, at 57–62% with the dataset by Gorlachev et al 31 , at 47–56% with the dataset by Bhattacharya et al 32 , and 79–94% for that by Ejeh et al 21 . The discrepancies of the experimental datasets may be due to experimental uncertainties in the measurement procedure, a challenge commonly seen with XPCS measurements as detailed by Lapicki and Miranda 33 .…”

Section: Methodssupporting

confidence: 75%

“…The observed large experiment/theory X-ray production cross section ratios at low projectile velocities as a function of increasing projectile mass for various collision systems confirm the need for additional XPCS measurements 19 , 20 . Even so, explicit reliance on a sparsely populated experimental database largely scattered in published literature makes it somewhat impractical for analysis of experimental heavy ion PIXE spectra where theory is largely inadequate 21 . Therefore, continuous XPCS measurements alone in an effort at enriching the cross section database, are not enough.…”

Section: Introductionmentioning

confidence: 99%

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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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Section: Methodssupporting

confidence: 75%

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

Self Cite

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show abstract

“…The measured cross sections were compared to published datasets, available in literature, for validation. As shown in Figure 3, ratios of experimental XPCS comparing our data for C projectiles in Bi showed fairly good agreement, at 57 -62% with the dataset by Gorlachev et al [29], at 47 -56% with the dataset by Bhattacharya et al [30], and 79 -94% for that by Ejeh et al [19]. The discrepancies of the experimental datasets may be due to experimental uncertainties in the measurement procedure, a challenge commonly seen with XPCS measurements as detailed by Lapicki and Miranda [31].…”

Section: X-ray Production Cross Section Evaluationsupporting

confidence: 80%

“…The observed large experiment/theory X-ray production cross section ratios at low projectile velocities as a function of increasing projectile mass for various collision systems confirm the need for additional XPCS measurements [17,18]. Even so, explicit reliance on a sparsely populated experimental database largely scattered in published literature makes it somewhat impractical for analysis of experimental heavy ion PIXE spectra where theory is largely inadequate [19].…”

Section: Introductionmentioning

confidence: 97%

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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L-shell ionisation and X-ray production cross-sections for some low Z-elements by proton impact

Aladese

2022

Journal of Electron Spectroscopy and Related Phenomena

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Measurement of L-shell X-ray production cross sections in 89Y, 158Gd and 209Bi due to 0.3 MeV/u – 1.0 MeV/u 12C ions

Cited by 6 publications

References 37 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

L-shell ionisation and X-ray production cross-sections for some low Z-elements by proton impact

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