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231225s2021 xx |||||o 00| ||eng c |
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|a 10.1107/S1600577521004835
|2 doi
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|a pubmed24n1091.xml
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|a (NLM)34212871
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|a DE-627
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|e rakwb
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|a eng
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| 100 |
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|a Scott, Christopher C
|e verfasserin
|4 aut
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| 245 |
1 |
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|a High-energy micrometre-scale pixel direct conversion X-ray detector
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|c 2021
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
|b c
|2 rdamedia
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| 338 |
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|a ƒa Online-Ressource
|b cr
|2 rdacarrier
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|a Date Revised 02.07.2021
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a The objective of this work was to fabricate and characterize a new X-ray imaging detector with micrometre-scale pixel dimensions (7.8 µm) and high detection efficiency for hard X-ray energies above 20 keV. A key technology component consists of a monolithic hybrid detector built by direct deposition of an amorphous selenium film on a custom designed CMOS readout integrated circuit. Characterization was carried out at the synchrotron beamline 1-BM-B at the Advanced Photon Source of Argonne National Laboratory. The direct conversion detector demonstrated micrometre-scale spatial resolution with a 63 keV modulation transfer function of 10% at Nyquist frequency. In addition, spatial resolving power down to 8 µm was determined by imaging a transmission bar target at 21 keV. X-ray signal linearity, responsivity and lag were also characterized in the same energy range. Finally, phase contrast edge enhancement was observed in a phase object placed in the beam path. This amorphous selenium/CMOS detector technology can address gaps in commercially available X-ray detectors which limit their usefulness for existing synchrotron applications at energies greater than 50 keV; for example, phase contrast tomography and high-resolution imaging of nanoscale lattice distortions in bulk crystalline materials using Bragg coherent diffraction imaging. The technology will also facilitate the creation of novel synchrotron imaging applications for X-ray energies at or above 20 keV
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|a Journal Article
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|a amorphous selenium
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|a high-energy X-ray detector
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| 650 |
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|a micrometre-scale spatial resolution
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| 700 |
1 |
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|a Farrier, Michael
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Li, Yunzhe
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Laxer, Sam
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Ravi, Parmesh
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Kenesei, Peter
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Wojcik, Michael J
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Miceli, Antonino
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Karim, Karim S
|e verfasserin
|4 aut
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| 773 |
0 |
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|i Enthalten in
|t Journal of synchrotron radiation
|d 1994
|g 28(2021), Pt 4 vom: 01. Juli, Seite 1081-1089
|w (DE-627)NLM09824129X
|x 1600-5775
|7 nnns
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| 773 |
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|g volume:28
|g year:2021
|g number:Pt 4
|g day:01
|g month:07
|g pages:1081-1089
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|u http://dx.doi.org/10.1107/S1600577521004835
|3 Volltext
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|h 1081-1089
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