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Applied Optics

Applied Optics


  • Vol. 43, Iss. 35 — Dec. 10, 2004
  • pp: 6413–6420

Wire transfer function analysis for castellated dual-energy x-ray detectors

Jer Wang Chan, James Paul Owain Evans, Yen San Yong, and Andrew Monteith  »View Author Affiliations

Applied Optics, Vol. 43, Issue 35, pp. 6413-6420 (2004)

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An investigation into the spatial resolving power of a castellated linear dual-energy x-ray detector array is reported. The detector was developed for use in aviation security screening applications. Experiments employing different gauges of lead wire are used to plot a wire transfer function. A numerical simulation is developed to predict and underpin the empirical results. The suitable processing of the castellated detector signals helps to maintain spatial resolving power while affording a 50% reduction in x-ray sensing elements. This encouraging result has formed the basis for an ongoing investigation into materials discrimination capability of the castellated detector array.

© 2004 Optical Society of America

OCIS Codes
(040.1520) Detectors : CCD, charge-coupled device
(110.4100) Imaging systems : Modulation transfer function
(110.7440) Imaging systems : X-ray imaging

Original Manuscript: February 24, 2004
Revised Manuscript: September 14, 2004
Manuscript Accepted: September 24, 2004
Published: December 10, 2004

Jer Wang Chan, James Paul Owain Evans, Yen San Yong, and Andrew Monteith, "Wire transfer function analysis for castellated dual-energy x-ray detectors," Appl. Opt. 43, 6413-6420 (2004)

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