X-ray scattering in X-ray fluorescence spectra with X-ray tube excitation – Modelling, experiment, and Monte-Carlo simulation

Hodoroabă, Vasile-Dan; Radtke, Martin; Vincze, László; Rackwitz, Vanessa; Reuter, D. C.

doi:10.1016/j.nimb.2010.09.017

Cited by 24 publications

(34 citation statements)

References 19 publications

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“…Hence, one main goal of this work, namely to investigate systematically the spectral distributions of X-ray scatter spectra with monochromatic excitation, could be achieved. The reliability of the model with respect to the absolute values of the X-ray scatter intensities have been already successfully demonstrated in our previous paper for polychromatic excitation [1]. The somewhat better overall agreement relative to the measurement is again not surprising due to the fact that, unlike the analytical model, the Monte-Carlo simulations include the challenging multiple X-ray scattering.…”

Section: Resultssupporting

confidence: 54%

“…In order to check the accuracy of the X-ray scattering model implemented as described in our recent work [1], systematic measurements with monochromatic, polarised excitation have been carried out at the BAMline/BESSY II synchrotron facility, adapted for monochromatic, polarised excitation. The specimens selected have been PMMA, pure aluminium and pure copper.…”

Section: Methodsmentioning

confidence: 99%

“…The elastic (Rayleigh) and inelastic (Compton) X-ray scattering with monochromatic, polarised excitation are governed by the same basic physical equations as described in detail in our recent publication for the case of polychromatic, unpolarised excitation [1]:…”

Section: Theorymentioning

confidence: 99%

“…A physical model for a quite accurate calculation of X-ray scattering spectra based on well-known X-ray tube excitation spectra and differential scattering cross sections reported in the literature has been recently successfully implemented by our group [1]. The results have also been related to metrological measurements performed with modern calibrated instrumentation, i.e.…”

Section: Introductionmentioning

confidence: 99%

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X-ray scattering in X-ray fluorescence spectra with X-ray monochromatic, polarised excitation – Modelling, experiment, and Monte-Carlo simulation

Hodoroabă

Radtke

Reinholz

et al. 2011

Nuclear Instruments and Methods in Physics Research Section B:

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Section: Resultssupporting

confidence: 54%

Section: Methodsmentioning

confidence: 99%

Section: Theorymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

X-ray scattering in X-ray fluorescence spectra with X-ray monochromatic, polarised excitation – Modelling, experiment, and Monte-Carlo simulation

Hodoroabă

Radtke

Reinholz

et al. 2011

Nuclear Instruments and Methods in Physics Research Section B:

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“…Based on a physical model for the calculation of XRF spectra developed and validated recently in our laboratory, 21,22 the capability to predict the limits of detection without the need for measurements or reference materials, but with exact knowledge of excitation, geometry and detection conditions will be evaluated. In particular the limits of detection will be determined in compliance with the ISO 11843-2:2000 international standard.…”

Section: Introductionmentioning

confidence: 99%

Performance of μ-XRF with SEM/EDS for trace analysis on the example of RoHS relevant elements – measurement, optimisation and prediction of the detection limits

Rackwitz

Ostermann

Panne

et al. 2013

J. Anal. At. Spectrom.

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For ten years m-XRF (micro-focus X-ray fluorescence) analysis has been performed with SEM/EDS (scanning electron microscope with an energy dispersive X-ray detector) so that non-destructive analysis of elements at trace level concentrations below 100 mg g À1 becomes possible. This can be considered as a valuable completion of the classical electron probe microanalysis by EDS, an analytical method "suffering" from rather poor limits of detection in the range of one to two orders of magnitude higher than those of m-XRF. Based on a representative actual application, namely analysis of RoHS relevant elements at trace concentration levels, the performance of the rather new analytical method with respect to its limits of detection is systematically evaluated. CRMs (certified reference materials) specially prepared to support the quantitative XRF analysis of RoHS relevant elements were employed. On the other side, based on calculations of m-XRF spectra according to a recently developed physical model the optimization of the analytical performance is also successfully undertaken.

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Cobalt deposition in mineralized bone tissue after metal-on-metal hip resurfacing: Quantitative μ-X-ray-fluorescence analysis of implant material incorporation in periprosthetic tissue

Hahn

Busse

Procop³

et al. 2016

J. Biomed. Mater. Res.

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Most resurfacing systems are manufactured from cobalt-chromium alloys with metal-on-metal (MoM) bearing couples. Because the quantity of particulate metal and corrosion products which can be released into the periprosthetic milieu is greater in MoM bearings than in metal-on-polyethylene (MoP) bearings, it is hypothesized that the quantity and distribution of debris released by the MoM components induce a compositional change in the periprosthetic bone. To determine the validity of this claim, nondestructive µ-X-ray fluorescence analysis was carried out on undecalcified histological samples from 13 femoral heads which had undergone surface replacement. These samples were extracted from the patients after gradient time points due to required revision surgery. Samples from nonintervened femoral heads as well as from a MoP resurfaced implant served as controls. Light microscopy and µ-X-ray fluorescence analyses revealed that cobalt debris was found not only in the soft tissue around the prosthesis and the bone marrow, but also in the mineralized bone tissue. Mineralized bone exposed to surface replacements showed significant increases in cobalt concentrations in comparison with control specimens without an implant. A maximum cobalt concentration in mineralized hard tissue of up to 380 ppm was detected as early as 2 years after implantation. Values of this magnitude are not found in implants with a MoP surface bearing until a lifetime of more than 20 years. This study demonstrates that hip resurfacing implants with MoM bearings present a potential long-term health risk due to rapid cobalt ion accumulation in periprosthetic hard tissue. © 2016 Wiley Periodicals, Inc. J Biomed Mater Res Part B: Appl Biomater, 105B: 1855-1862, 2017.

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X-ray scattering in X-ray fluorescence spectra with X-ray tube excitation – Modelling, experiment, and Monte-Carlo simulation

Cited by 24 publications

References 19 publications

X-ray scattering in X-ray fluorescence spectra with X-ray monochromatic, polarised excitation – Modelling, experiment, and Monte-Carlo simulation

X-ray scattering in X-ray fluorescence spectra with X-ray monochromatic, polarised excitation – Modelling, experiment, and Monte-Carlo simulation

Performance of μ-XRF with SEM/EDS for trace analysis on the example of RoHS relevant elements – measurement, optimisation and prediction of the detection limits

Cobalt deposition in mineralized bone tissue after metal-on-metal hip resurfacing: Quantitative μ-X-ray-fluorescence analysis of implant material incorporation in periprosthetic tissue

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