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Virtual Journal for Biomedical Optics

Virtual Journal for Biomedical Optics


  • Editors: Andrew Dunn and Anthony Durkin
  • Vol. 8, Iss. 3 — Apr. 4, 2013

On the resolution and linearity of lensless in situ X-ray beam diagnostics using pixelated sensors

Anton Kachatkou and Roelof van Silfhout  »View Author Affiliations

Optics Express, Vol. 21, Issue 4, pp. 4291-4302 (2013)

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We present a theoretical model that describes the resolution and linearity of a novel transparent X-ray beam imaging and position measurement method. Using a pinhole or coded aperture camera with pixelated area sensors to image a small fraction of radiation scattered by a thin foil placed at oblique angles with respect to the beam, a very precise measurement of the beam position is made. We show that the resolution of the method is determined by incident beam intensity, beam size, camera parameters, sensor pixel size and noise. The model is verified experimentally showing a sub-micrometer resolution over a large linear range.

© 2013 OSA

OCIS Codes
(120.3930) Instrumentation, measurement, and metrology : Metrological instrumentation
(170.1630) Medical optics and biotechnology : Coded aperture imaging
(290.5820) Scattering : Scattering measurements
(340.6720) X-ray optics : Synchrotron radiation
(340.7440) X-ray optics : X-ray imaging
(350.5730) Other areas of optics : Resolution

ToC Category:
X-ray Optics

Original Manuscript: November 23, 2012
Revised Manuscript: January 24, 2013
Manuscript Accepted: February 5, 2013
Published: February 12, 2013

Virtual Issues
Vol. 8, Iss. 3 Virtual Journal for Biomedical Optics

Anton Kachatkou and Roelof van Silfhout, "On the resolution and linearity of lensless in situ X-ray beam diagnostics using pixelated sensors," Opt. Express 21, 4291-4302 (2013)

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