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A compact-rigid multi-analyser for energy and angle filtering of high-resolution X-ray experiments. Part 2. Efficiency of a single-crystal-comb
Diffraction instruments using filtering by one or several analyser crystals exist since the 1980s and 1990s at synchrotron radiation sources, but, due to its low efficiency, this filtering is little used on laboratory sources. In order to overcome this limitation, the efficiency of a small diffracti...
Autores principales: | , , , , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
International Union of Crystallography
2023
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9814061/ https://www.ncbi.nlm.nih.gov/pubmed/36601932 http://dx.doi.org/10.1107/S1600577522011250 |
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author | Hodeau, J.-L. Prat, A. Boudet, N. Blanc, N. Arnaud, S. Hazemann, J.-L. Lahéra, E. Proux, O. Jacquet, M. Autran, P.-O. Dejoie, C. Martinetto, P. |
author_facet | Hodeau, J.-L. Prat, A. Boudet, N. Blanc, N. Arnaud, S. Hazemann, J.-L. Lahéra, E. Proux, O. Jacquet, M. Autran, P.-O. Dejoie, C. Martinetto, P. |
author_sort | Hodeau, J.-L. |
collection | PubMed |
description | Diffraction instruments using filtering by one or several analyser crystals exist since the 1980s and 1990s at synchrotron radiation sources, but, due to its low efficiency, this filtering is little used on laboratory sources. In order to overcome this limitation, the efficiency of a small diffraction filtering multi-analyzer block (MAD block) realized with a ‘single-crystal-comb’ curved on a rigid support is demonstrated here. The geometry of this curved surface is logarithmic spiral and is optimized to allow multi-filtering over a relatively important diffraction angular range and to be also applicable over an X-ray spectral range. The efficiency of such a small rigid-compact MAD block consisting of this single-crystal-comb generating 20–50 Si(111) single-crystal blades, associated with a block of Soller collimators, is demonstrated. The angle between each crystal is 0.1°, so the measurement range of the comb is 2–5°. The geometry of this system has been optimized for operation with a synchrotron X-ray source over an energy range of 22 keV to 46 keV and could be used with laboratory X-ray sources (Ag Kα(1), 22.1 keV). This MAD block complements and exploits the qualities of the ‘photon-counting’ detectors which have very low intrinsic noise. Their joint efficacy is supported by powder pattern measurements of a LaB(6) reference sample and of several heterogeneous samples of cultural heritage materials, carried out at 22 keV on the D2AM beamline at the ESRF. Their signal-to-noise ratio is excellent (1000/1) and allows the detection thresholds of the measurements (from 3–1% to 0.1%) to detect minor phases in the studies of ‘real’ heterogeneous materials to be drastically improved. |
format | Online Article Text |
id | pubmed-9814061 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2023 |
publisher | International Union of Crystallography |
record_format | MEDLINE/PubMed |
spelling | pubmed-98140612023-01-09 A compact-rigid multi-analyser for energy and angle filtering of high-resolution X-ray experiments. Part 2. Efficiency of a single-crystal-comb Hodeau, J.-L. Prat, A. Boudet, N. Blanc, N. Arnaud, S. Hazemann, J.-L. Lahéra, E. Proux, O. Jacquet, M. Autran, P.-O. Dejoie, C. Martinetto, P. J Synchrotron Radiat Research Papers Diffraction instruments using filtering by one or several analyser crystals exist since the 1980s and 1990s at synchrotron radiation sources, but, due to its low efficiency, this filtering is little used on laboratory sources. In order to overcome this limitation, the efficiency of a small diffraction filtering multi-analyzer block (MAD block) realized with a ‘single-crystal-comb’ curved on a rigid support is demonstrated here. The geometry of this curved surface is logarithmic spiral and is optimized to allow multi-filtering over a relatively important diffraction angular range and to be also applicable over an X-ray spectral range. The efficiency of such a small rigid-compact MAD block consisting of this single-crystal-comb generating 20–50 Si(111) single-crystal blades, associated with a block of Soller collimators, is demonstrated. The angle between each crystal is 0.1°, so the measurement range of the comb is 2–5°. The geometry of this system has been optimized for operation with a synchrotron X-ray source over an energy range of 22 keV to 46 keV and could be used with laboratory X-ray sources (Ag Kα(1), 22.1 keV). This MAD block complements and exploits the qualities of the ‘photon-counting’ detectors which have very low intrinsic noise. Their joint efficacy is supported by powder pattern measurements of a LaB(6) reference sample and of several heterogeneous samples of cultural heritage materials, carried out at 22 keV on the D2AM beamline at the ESRF. Their signal-to-noise ratio is excellent (1000/1) and allows the detection thresholds of the measurements (from 3–1% to 0.1%) to detect minor phases in the studies of ‘real’ heterogeneous materials to be drastically improved. International Union of Crystallography 2023-01-01 /pmc/articles/PMC9814061/ /pubmed/36601932 http://dx.doi.org/10.1107/S1600577522011250 Text en © J.-L. Hodeau et al. 2023 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 Hodeau, J.-L. Prat, A. Boudet, N. Blanc, N. Arnaud, S. Hazemann, J.-L. Lahéra, E. Proux, O. Jacquet, M. Autran, P.-O. Dejoie, C. Martinetto, P. A compact-rigid multi-analyser for energy and angle filtering of high-resolution X-ray experiments. Part 2. Efficiency of a single-crystal-comb |
title | A compact-rigid multi-analyser for energy and angle filtering of high-resolution X-ray experiments. Part 2. Efficiency of a single-crystal-comb |
title_full | A compact-rigid multi-analyser for energy and angle filtering of high-resolution X-ray experiments. Part 2. Efficiency of a single-crystal-comb |
title_fullStr | A compact-rigid multi-analyser for energy and angle filtering of high-resolution X-ray experiments. Part 2. Efficiency of a single-crystal-comb |
title_full_unstemmed | A compact-rigid multi-analyser for energy and angle filtering of high-resolution X-ray experiments. Part 2. Efficiency of a single-crystal-comb |
title_short | A compact-rigid multi-analyser for energy and angle filtering of high-resolution X-ray experiments. Part 2. Efficiency of a single-crystal-comb |
title_sort | compact-rigid multi-analyser for energy and angle filtering of high-resolution x-ray experiments. part 2. efficiency of a single-crystal-comb |
topic | Research Papers |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9814061/ https://www.ncbi.nlm.nih.gov/pubmed/36601932 http://dx.doi.org/10.1107/S1600577522011250 |
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