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...
| Main Authors: | , , , , , , , , , , , |
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| Format: | Article |
| Language: | English |
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International Union of Crystallography
2023-01-01
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| Series: | Journal of Synchrotron Radiation |
| Subjects: | |
| Online Access: | http://scripts.iucr.org/cgi-bin/paper?S1600577522011250 |
| _version_ | 1797960662938288128 |
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| author | J.-L. Hodeau A. Prat N. Boudet N. Blanc S. Arnaud J.-L. Hazemann E. Lahéra O. Proux M. Jacquet P.-O. Autran C. Dejoie P. Martinetto |
| author_facet | J.-L. Hodeau A. Prat N. Boudet N. Blanc S. Arnaud J.-L. Hazemann E. Lahéra O. Proux M. Jacquet P.-O. Autran C. Dejoie P. Martinetto |
| author_sort | J.-L. Hodeau |
| collection | DOAJ |
| 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 Kα1, 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 LaB6 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. |
| first_indexed | 2024-04-11T00:48:36Z |
| format | Article |
| id | doaj.art-0ea84ef376a3454687f347b75a7bbd0d |
| institution | Directory Open Access Journal |
| issn | 1600-5775 |
| language | English |
| last_indexed | 2024-04-11T00:48:36Z |
| publishDate | 2023-01-01 |
| publisher | International Union of Crystallography |
| record_format | Article |
| series | Journal of Synchrotron Radiation |
| spelling | doaj.art-0ea84ef376a3454687f347b75a7bbd0d2023-01-05T10:01:29ZengInternational Union of CrystallographyJournal of Synchrotron Radiation1600-57752023-01-0130112613610.1107/S1600577522011250vl5006A compact-rigid multi-analyser for energy and angle filtering of high-resolution X-ray experiments. Part 2. Efficiency of a single-crystal-combJ.-L. Hodeau0A. Prat1N. Boudet2N. Blanc3S. Arnaud4J.-L. Hazemann5E. Lahéra6O. Proux7M. Jacquet8P.-O. Autran9C. Dejoie10P. Martinetto11Institut Néel CNRS-UGA, 25 Avenue des Martyrs, 38042 Grenoble, FranceInstitut Néel CNRS-UGA, 25 Avenue des Martyrs, 38042 Grenoble, FranceInstitut Néel CNRS-UGA, 25 Avenue des Martyrs, 38042 Grenoble, FranceInstitut Néel CNRS-UGA, 25 Avenue des Martyrs, 38042 Grenoble, FranceInstitut Néel CNRS-UGA, 25 Avenue des Martyrs, 38042 Grenoble, FranceInstitut Néel CNRS-UGA, 25 Avenue des Martyrs, 38042 Grenoble, FranceOSUG-FAME, CNRS-UGA-IRD-INRAe-MétéoFrance, 71 Avenue des Martyrs, 38000 Grenoble, FranceOSUG-FAME, CNRS-UGA-IRD-INRAe-MétéoFrance, 71 Avenue des Martyrs, 38000 Grenoble, FranceLAL, Univ. Paris-Sud XI, CNRS-IN2P3, Orsay, FranceEuropean Synchrotron Radiation Facility, 71 Avenue des Martyrs, F-38000 Grenoble, FranceEuropean Synchrotron Radiation Facility, 71 Avenue des Martyrs, F-38000 Grenoble, FranceInstitut Néel CNRS-UGA, 25 Avenue des Martyrs, 38042 Grenoble, FranceDiffraction 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 Kα1, 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 LaB6 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.http://scripts.iucr.org/cgi-bin/paper?S1600577522011250high-resolution powder diffractionmulti-analyser-diffraction filteringheterogeneous materialscompact-rigid multi-analyser |
| spellingShingle | J.-L. Hodeau A. Prat N. Boudet N. Blanc S. Arnaud J.-L. Hazemann E. Lahéra O. Proux M. Jacquet P.-O. Autran C. Dejoie P. Martinetto A compact-rigid multi-analyser for energy and angle filtering of high-resolution X-ray experiments. Part 2. Efficiency of a single-crystal-comb Journal of Synchrotron Radiation high-resolution powder diffraction multi-analyser-diffraction filtering heterogeneous materials compact-rigid multi-analyser |
| 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 | high-resolution powder diffraction multi-analyser-diffraction filtering heterogeneous materials compact-rigid multi-analyser |
| url | http://scripts.iucr.org/cgi-bin/paper?S1600577522011250 |
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