High-resolution high-efficiency X-ray imaging system based on the in-line Bragg magnifier and the Medipix detector

DOI: 10.1107/S0909049512044366
PMID: 23254668

Authors: Patrik Vagovic (ANKA Light Source, Karlsruhe Institute of Technology, Karlsruhe, Germany) , Dusan Korytar (Institute for Electrical Engineering, Slovak Academy of Sciences, Bratislava, Slovakia) , Angelica Cecilia (ANKA Light Source, Karlsruhe Institute of Technology, Karlsruhe, Germany) , Elias Hamann (ANKA Light Source, Karlsruhe Institute of Technology, Karlsruhe, Germany) , Libor Sveda (FNSPE CTU in Prague, Czech Republic) , Daniele Pelliccia (School of Physics,Monash University, Victoria 3800, Australia) , Jurgen Hartwig (ESRF,Grenoble, France) , Peter Oberta (Czech Academy of Sciences, Czech Republic) , Igor Dolbnya (Diamond Light Source) , Kawal Sawhney (Diamond Light Source) , Uwe Fleschig (Swiss Light Source, PSI, Switzerland) , Michael Fiederle (FMF, Freiburg, Germany) , Tilo Baumbach (ANKA Light Source, Karlsruhe Institute of Technology, Karlsruhe, Germany)
Co-authored by industrial partner: No

Type: Journal Paper
Journal: Journal Of Synchrotron Radiation

State: Published (Approved)
Published: November 2012
Diamond Proposal Number(s): 7662

Abstract: The performance of a recently developed full-field X-ray micro-imaging system based on an in-line Bragg magnifier is reported. The system is composed of quasi-channel-cut crystals in combination with a Medipix single-photon-counting detector. A theoretical and experimental study of the imaging performance of the crystals-detector combination and a comparison with a standard indirect detector typically used in high-resolution X-ray imaging schemes are reported. The spatial resolution attained by our system is about 0.75 µm, limited only by the current magnification. Compared with an indirect detector system, this system features a better efficiency, signal-to-noise ratio and spatial resolution. The optimal working resolution range of this system is between 0.4 µm and 1 µm, filling the gap between transmission X-ray microscopes and indirect detectors. Applications for coherent full-field imaging of weakly absorbing samples are shown and discussed.

Journal Keywords: Bragg magnifier; germanium; holography; high resolution; in-line; X-ray imaging

Subject Areas: Engineering, Physics


Instruments: B16-Test Beamline

Other Facilities: TopoTomo at ANKA; X05DA at SLS

Added On: 30/09/2012 16:18

Discipline Tags:

Detectors Physics Engineering & Technology

Technical Tags:

Imaging