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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: Joseph N. Mait
  • Vol. 52, Iss. 33 — Nov. 20, 2013
  • pp: 8122–8127

Hierarchical radioscopy using polychromatic and partially coherent hard synchrotron radiation

Alexander Rack, Francisco García-Moreno, Lukas Helfen, Manas Mukherjee, Catalina Jiménez, Tatjana Rack, Peter Cloetens, and John Banhart  »View Author Affiliations


Applied Optics, Vol. 52, Issue 33, pp. 8122-8127 (2013)
http://dx.doi.org/10.1364/AO.52.008122


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Abstract

Pushing synchrotron x-ray radiography to increasingly higher image-acquisition rates (currently up to 100,000 fps) while maintaining spatial resolutions in the micrometer range implies drastically reduced fields of view. As a consequence, either imaging a small subregion of the sample with high spatial resolution or only the complete specimen with moderate resolution is applicable. We introduce a concept to overcome this limitation by making use of a semi-transparent x-ray detector positioned close to the investigated sample. The hard x-rays that pass through the sample either create an image on the first detector or keep on propagating until they are captured by a second x-ray detector located further downstream. In this way, a process can be imaged simultaneously in a hierarchical manner within a single exposure and a projection of the complete object with moderate resolution as well as a subregion with high resolution are obtained. As a proof-of-concept experiment, image sequences of an evolving liquid-metal foam are shown, employing frame rates of 1000images/s (1.2 μm pixel size) and 15,000images/s (18.1 μm pixel size) for the first and second detector, respectively.

© 2013 Optical Society of America

OCIS Codes
(000.2170) General : Equipment and techniques
(320.3980) Ultrafast optics : Microsecond phenomena
(340.6720) X-ray optics : Synchrotron radiation
(340.7440) X-ray optics : X-ray imaging
(110.6915) Imaging systems : Time imaging

ToC Category:
X-ray Optics

History
Original Manuscript: August 13, 2013
Manuscript Accepted: September 14, 2013
Published: November 18, 2013

Citation
Alexander Rack, Francisco García-Moreno, Lukas Helfen, Manas Mukherjee, Catalina Jiménez, Tatjana Rack, Peter Cloetens, and John Banhart, "Hierarchical radioscopy using polychromatic and partially coherent hard synchrotron radiation," Appl. Opt. 52, 8122-8127 (2013)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-52-33-8122

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Supplementary Material


» Media 1: AVI (4636 KB)     
» Media 2: AVI (11911 KB)     

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