System and method for XRD-based threat detection

X-ray or gamma ray systems or devices – Specific application – Diffraction – reflection – or scattering analysis

Reexamination Certificate

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C378S087000

Reexamination Certificate

active

07924978

ABSTRACT:
System and method for XRD-based threat detection. An object is scanned with a first threat detection system. One or more alarm objects are identified. Data about the one or more alarm objects is passed from the first threat detection system to a second threat detection system and is used to move and/or to rotate the object in a predetermined ray path that decreases attenuation of scattered x-ray radiation. Also disclosed is a secondary collimator for XRD-based false alarm resolution in computed tomography {“CT”) threat detection systems. The secondary collimator comprises one or more slit apertures configured to provide a multi-angle capability that extends a range of momenta for which XRD intensities are measured for a predetermined range of photon intensities.

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patent: 2008033620 (2008-03-01), None

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