Method and apparatus for the inspection of contained materials
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United States of America Patent
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Dec 1, 2020
Grant Date -
Aug 18, 2016
app pub date -
Oct 28, 2014
filing date -
Oct 28, 2013
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Abstract
A method for the inspection of contained flowable materials within containers, such as detecting an explosive liquid in a luggage, and an apparatus for performing the method are described. The method includes the steps of: performing a radiation scan, using X-rays or Gamma rays, of a target item container of contained flowable material in a radiation scanning system to derive a spatially distributed and spectroscopically resolved measured dataset of the intensity of radiation emergent from the target item; considering the spatially distributed and spectroscopically resolved dataset of transmitted radiation intensity to be nominally determined in accordance with a relationship: [O]·[δ]=[λ] where the operators [δ] and [λ] define, respectively, physical parameters describing the liquid and the container and the system response and the operator [O] defines the relationships between the system response and the liquid and container parameters; numerically processing the measured dataset by operator inversion in order to derive a best fit solution of: [δ]=[O]−1·[λ]; and using that derived solution to determine the threat status of the target item.
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