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Investigation of polycapillary half lenses for quantitative confocal micro-X-ray fluorescence analysis

The use of polycapillary optics in confocal micro-X-ray fluorescence analysis (CMXRF) enables the destruction-free 3D investigation of the elemental composition of samples. The energy-dependent transmission properties, concerning intensity and spatial beam propagation of three polycapillary half len...

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Autores principales: Iro, Michael, Ingerle, Dieter, Radtke, Martin, Guilherme Buzanich, Ana, Kregsamer, Peter, Streli, Christina
Formato: Online Artículo Texto
Lenguaje:English
Publicado: International Union of Crystallography 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9641561/
https://www.ncbi.nlm.nih.gov/pubmed/36345745
http://dx.doi.org/10.1107/S1600577522009699
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author Iro, Michael
Ingerle, Dieter
Radtke, Martin
Guilherme Buzanich, Ana
Kregsamer, Peter
Streli, Christina
author_facet Iro, Michael
Ingerle, Dieter
Radtke, Martin
Guilherme Buzanich, Ana
Kregsamer, Peter
Streli, Christina
author_sort Iro, Michael
collection PubMed
description The use of polycapillary optics in confocal micro-X-ray fluorescence analysis (CMXRF) enables the destruction-free 3D investigation of the elemental composition of samples. The energy-dependent transmission properties, concerning intensity and spatial beam propagation of three polycapillary half lenses, which are vital for the quantitative interpretation of such CMXRF measurements, are investigated in a monochromatic confocal laboratory setup at the Atominstitut of TU Wien, and a synchrotron setup on the BAMline beamline at the BESSY II Synchrotron, Helmholtz-Zentrum-Berlin. The empirically established results, concerning the intensity of the transmitted beam, are compared with theoretical values calculated with the polycap software package and a newly presented analytical model for the transmission function. The resulting form of the newly modelled energy-dependent transmission function is shown to be in good agreement with Monte Carlo simulated results for the complete energy regime, as well as the empirically established results for the energy regime between 6 keV and 20 keV. An analysis of possible fabrication errors was conducted via pinhole scans showing only minor fabrication errors in two of the investigated polycapillary optics. The energy-dependent focal spot size of the primary polycapillary was investigated in the laboratory via the channel-wise evaluation of knife-edge scans. Experimental results are compared with data given by the manufacturer as well as geometric estimations for the minimal focal spot size. Again, the resulting measurement points show a trend in agreement with geometrically estimated results and manufacturer data.
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spelling pubmed-96415612022-11-14 Investigation of polycapillary half lenses for quantitative confocal micro-X-ray fluorescence analysis Iro, Michael Ingerle, Dieter Radtke, Martin Guilherme Buzanich, Ana Kregsamer, Peter Streli, Christina J Synchrotron Radiat Research Papers The use of polycapillary optics in confocal micro-X-ray fluorescence analysis (CMXRF) enables the destruction-free 3D investigation of the elemental composition of samples. The energy-dependent transmission properties, concerning intensity and spatial beam propagation of three polycapillary half lenses, which are vital for the quantitative interpretation of such CMXRF measurements, are investigated in a monochromatic confocal laboratory setup at the Atominstitut of TU Wien, and a synchrotron setup on the BAMline beamline at the BESSY II Synchrotron, Helmholtz-Zentrum-Berlin. The empirically established results, concerning the intensity of the transmitted beam, are compared with theoretical values calculated with the polycap software package and a newly presented analytical model for the transmission function. The resulting form of the newly modelled energy-dependent transmission function is shown to be in good agreement with Monte Carlo simulated results for the complete energy regime, as well as the empirically established results for the energy regime between 6 keV and 20 keV. An analysis of possible fabrication errors was conducted via pinhole scans showing only minor fabrication errors in two of the investigated polycapillary optics. The energy-dependent focal spot size of the primary polycapillary was investigated in the laboratory via the channel-wise evaluation of knife-edge scans. Experimental results are compared with data given by the manufacturer as well as geometric estimations for the minimal focal spot size. Again, the resulting measurement points show a trend in agreement with geometrically estimated results and manufacturer data. International Union of Crystallography 2022-10-21 /pmc/articles/PMC9641561/ /pubmed/36345745 http://dx.doi.org/10.1107/S1600577522009699 Text en © Michael Iro et al. 2022 https://creativecommons.org/licenses/by/4.0/This is an open-access article distributed under the terms of the Creative Commons Attribution (CC-BY) Licence, which permits unrestricted use, distribution, and reproduction in any medium, provided the original authors and source are cited.
spellingShingle Research Papers
Iro, Michael
Ingerle, Dieter
Radtke, Martin
Guilherme Buzanich, Ana
Kregsamer, Peter
Streli, Christina
Investigation of polycapillary half lenses for quantitative confocal micro-X-ray fluorescence analysis
title Investigation of polycapillary half lenses for quantitative confocal micro-X-ray fluorescence analysis
title_full Investigation of polycapillary half lenses for quantitative confocal micro-X-ray fluorescence analysis
title_fullStr Investigation of polycapillary half lenses for quantitative confocal micro-X-ray fluorescence analysis
title_full_unstemmed Investigation of polycapillary half lenses for quantitative confocal micro-X-ray fluorescence analysis
title_short Investigation of polycapillary half lenses for quantitative confocal micro-X-ray fluorescence analysis
title_sort investigation of polycapillary half lenses for quantitative confocal micro-x-ray fluorescence analysis
topic Research Papers
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9641561/
https://www.ncbi.nlm.nih.gov/pubmed/36345745
http://dx.doi.org/10.1107/S1600577522009699
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