Open AccessHigh‐resolution high‐efficiency X‐ray imaging system based on the in‐line Bragg magnifier and the Medipix detector
Author(s) -
Vagovič Patrik,
Korytár Dušan,
Cecilia Angelica,
Hamann Elias,
Švéda Libor,
Pelliccia Daniele,
Härtwig Jürgen,
Zápražný Zdenko,
Oberta Peter,
Dolbnya Igor,
Shawney Kawal,
Fleschig Uwe,
Fiederle Michael,
Baumbach Tilo
Publication year - 2013
Publication title -
journal of synchrotron radiation
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.172
H-Index - 99
ISSN - 1600-5775
DOI - 10.1107/s0909049512044366
Subject(s) - detector , optics , magnification , physics , image resolution , resolution (logic) , line (geometry) , field of view , microscope , x ray detector , photon counting , computer science , geometry , mathematics , artificial intelligence
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.