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In-line Bragg magnifier based on V-shaped germanium crystals
- Source :
- Journal of synchrotron radiation 18 (2011): 753–760. doi:10.1107/S090904951102989X, info:cnr-pdr/source/autori:Patrik Vagovic, Dusan Korytar, Petr Mikulik, Angelica Cecilia, Claudio Ferrari, Yang Yang, Daniel Haenschke, Elias Hamann, Daniele Pelliccia, Tamzin Laford, Michael Fiederle and Tilo Baumbach/titolo:In-line Bragg magnifier based on V-shaped germanium crystals/doi:10.1107%2FS090904951102989X/rivista:Journal of synchrotron radiation/anno:2011/pagina_da:753/pagina_a:760/intervallo_pagine:753–760/volume:18
- Publication Year :
- 2011
- Publisher :
- International Union of Crystallography (IUCr), 2011.
-
Abstract
- In this work an X-ray imaging system based on a recently developed in-line two-dimensional Bragg magnifier composed of two monolithic V-shaped crystals made of dislocation-free germanium is presented. The channel-cut crystals were used in one-dimensional and in two-dimensional (crossed) configurations in imaging applications and allowed measurement of phase-contrast radiograms both in the edge-enhanced and in the holographic regimes. The measurement of the phase gradient in two orthogonal directions is demonstrated. The effective pixel size attained was 0.17 mu m in the one-dimensional configuration and 0.5 mu m in the two-dimensional setting, offering a twofold improvement in spatial resolution over devices based on silicon. These results show the potential for applying Bragg magnifiers to imaging soft matter at high resolution with reduced dose owing to the higher efficiency of Ge compared with Si.
- Subjects :
- Nuclear and High Energy Physics
Materials science
Silicon
Holography
Physics::Optics
chemistry.chemical_element
X-ray optics
Germanium
02 engineering and technology
01 natural sciences
law.invention
Optics
law
0103 physical sciences
Soft matter
Instrumentation
Image resolution
010302 applied physics
Radiation
business.industry
Bragg magnifier
phase-contrast imaging
channel-cut crystal
in-line configuration
Phase-contrast imaging
021001 nanoscience & nanotechnology
chemistry
X-ray crystallography
Optoelectronics
0210 nano-technology
business
Subjects
Details
- ISSN :
- 16005775 and 09090495
- Volume :
- 18
- Database :
- OpenAIRE
- Journal :
- Journal of Synchrotron Radiation
- Accession number :
- edsair.doi.dedup.....efd2f79a11a493b09f7e18f6b9d913ba
- Full Text :
- https://doi.org/10.1107/s090904951102989x