Experimental measurements of X-ray production cross-sections by protons of energies between 1 and 2.3 MeV and comparison with theoretical predictions of PWBA and ECPSSR models

Ouziane, S.; Amokrane, A.; Zilabdi, M.

doi:10.1016/s0168-583x(99)00916-7

Cited by 13 publications

(7 citation statements)

References 9 publications

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“…Therefore, it is proposed that the observed x rays are produced by the swift C 6+ ions with the same energy, even though they result from the different atomic layers. Taking into account of the self-absorption of the target and the absorption of air between the target and the detector, the experimental x-ray production cross section can be extracted from the thin target formula and can be expressed as 27 , 48 : where μ is the absorption coefficient of the x ray. N X is the obtained counts of the x ray which were extracted by fitting the x-ray spectrum with Gauss function of origin software, namely, the area under peak of the fitted spectral line.…”

Section: Resultsmentioning

confidence: 99%

Au L-shell x-ray emission induced by 154.3–423.9 MeV/u C6+ ions

Zhou

Wei

Cheng

et al. 2022

Sci Rep

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The L-shell x-ray emissions of gold are investigated for the bombardment of high energy C6+ ions in the high energy region of 154.3–423.9 MeV/u. Due to the multiple ionization of outer-shell electrons at the movement of L x-ray emission, the blue shift of the experimental x-ray energy and an enhancement of the relative intensity ratios of Lι, Lβ–Lα x rays are observed. Using the improved thin target formula and considering the effect of multiple ionization on atomic parameters, the L-subshell x-ray production cross sections are extracted from the counts and compared with the theoretical estimations of BEA, PWBA and ECPSSR. It is found that the relative corrections of ECPSSR on PWBA can be ignored in the present experimental energy region. The calculations of PWBA and ECPSSR are almost identical and both are larger than the experimental results. The BEA is in better agreement with the experiment as a whole.

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Section: Resultsmentioning

confidence: 99%

Au L-shell x-ray emission induced by 154.3–423.9 MeV/u C6+ ions

Zhou

Wei

Cheng

et al. 2022

Sci Rep

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“…In particular, the uncertainty bars obtained from Krause and the ECPSSR are given. Also, all the available published experimental data [3,[28][29][30][31][32][33] are plotted.…”

Section: Effect Of Experimental Uncertainties On X-ray Production Cromentioning

confidence: 99%

“…Experimental data were taken from the compilations by Paul and Sacher [3] and Lapicki [27]; new data from Refs. [28][29][30][31][32][33]. Curves correspond to PWBA and ECPSSR theories, ECPSSR-UA with united atom correction, RECPSSR to ECPSSR with relativistic ion velocity, and RECPSSR-UA the same with united atom correction.…”

Section: Figurementioning

confidence: 99%

How do Uncertainties in Atomic Parameters Influence Theoretical Predictions of X-Ray Production Cross Sections By Proton Impact?

Miranda

2020

J. Nucl. Phy. Mat. Sci. Rad. A.

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The emission of characteristic X-rays induced by proton impact is a phenomenon known since the first half of the 20th century. Its more widely known application is the analytical technique Particle Induced X-ray Emission (PIXE). Several models have been developed to calculate, first, ionization cross sections and then the subsequent X-ray production cross sections. However, to carry out the comparisons of these predictions with experimental data it is necessary to use atomic parameters databases (fluorescence yields, Coster-Kronig transition probabilities, emission rates) that also have experimental uncertainties. In this work it is demonstrated how these values do not allow to decide which model describes more accurately the cross sections, due to a final “theoretical uncertainty” obtained through the propagation of the original uncertainties.

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“…In particular, the uncertainty bars obtained from Krause and the ECPSSR are given. Also, all the available published experimental data [3,[28][29][30][31][32][33] are plotted. Figure 1: Total K X-ray production cross sections of Cu induced by proton impact.…”

Section: Effect Of Experimental Uncertainties On X-ray Production Cromentioning

confidence: 99%

On the Role of Large Nuclear Gravity in Understanding Strong Coupling Constant, Nuclear Stability Range, Binding Energy of Isotopes and Magic proton numbers – A Critical Review

Seshavatharam¹,

Lakshminarayana²

2019

JNP

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The emission of characteristic X-rays induced by proton impact is a phenomenon known since the first half of the 20 th century. Its more widely known application is the analytical technique Particle Induced X-ray Emission (PIXE). Several models have been developed to calculate, first, ionization cross sections and then the subsequent X-ray production cross sections. However, to carry out the comparisons of these predictions with experimental data it is necessary to use atomic parameters databases (fluorescence yields, Coster-Kronig transition probabilities, emission rates) that also have experimental uncertainties. In this work it is demonstrated how these values do not allow to decide which model describes more accurately the cross sections, due to a final "theoretical uncertainty" obtained through the propagation of the original uncertainties.

show abstract

Experimental measurements of X-ray production cross-sections by protons of energies between 1 and 2.3 MeV and comparison with theoretical predictions of PWBA and ECPSSR models

Cited by 13 publications

References 9 publications

Au L-shell x-ray emission induced by 154.3–423.9 MeV/u C6+ ions

Au L-shell x-ray emission induced by 154.3–423.9 MeV/u C6+ ions

How do Uncertainties in Atomic Parameters Influence Theoretical Predictions of X-Ray Production Cross Sections By Proton Impact?

On the Role of Large Nuclear Gravity in Understanding Strong Coupling Constant, Nuclear Stability Range, Binding Energy of Isotopes and Magic proton numbers – A Critical Review

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