K-shell X-ray production cross sections of Ti, Cr, Ni and Zn induced by chlorine ions

Fernandes, F. A. N.; Grande, P.L.; Dias, Johnny Ferraz

doi:10.1016/j.apradiso.2023.110903

Cited by 1 publication

(1 citation statement)

References 31 publications

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“…This is because, fundamentally, protonic ionisation, largely due to the deflection of the proton nuclear charge about the target nuclear mean field, is not the same as that which is due to heavier ions. Slow moving heavy ions, which have larger nuclear and electron potentials, can be characterized as having longer dwell times within the vicinity of the target nuclear mean field 10 . This makes the target atom prone to several ionisations in a single collision event, which goes beyond Direct Ionisation and may include other ionisation modes such as electron capture 11 .…”

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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Section: Introductionmentioning

confidence: 99%