Kromek Limited

Andrew Keith Powell

Ian Radley

Benjamin John Cantwell

John Atkins

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]&#xb7;[&#x3b4;]=[&#x3bb;] where the operators [&#x3b4;] and [&#x3bb;] 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: [&#x3b4;]=[O]&#xb7;[&#x3bb;]; and using that derived solution to determine the threat status of the target item.

Method and apparatus for the inspection of contained materials

A method of radiological examination of an object for the identification and detection of the composition the object comprising the steps of: irradiating an object under test with high energy radiation such as x-rays or gamma-rays and collecting radiation emergent from the object at a suitable detector system in such manner that emergent radiation intensity data is collected for the entire volume of the object under test; numerically processing the radiation intensity data to obtain a first data item correlated to the total number of electrons within the sample; applying an alternative method to obtain a second data item correlated to another property of the sample; using the first and second data items to derive an indication of the material content of the sample.

Identification of materials

A method is for the deconvolution of a statistically noisy spectral dataset is described comprising the steps of: a. obtaining a spectroscopically resolved dataset of measured flux from a sample that has been collected using a suitable detector radiation system; b. generating an initial estimate of the true spectrum; c. modifying the estimate of the true spectrum by a response function of the detector used to collect the measured flux dataset so as to generate an estimate flux dataset; d. computing a merit value for statistical fit between the measured flux dataset and the estimate flux dataset; e. applying a perturbation to a value of the estimate of the true spectrum; f. repeating steps c and d to the estimate of the true spectrum so changed, accepting the change to the estimate of the true spectrum if the resultant merit value indicates an improvement or if the resultant merit value indicates a deterioration of less than a limit margin, and rejecting the change to the estimate of the true spectrum if the resultant merit value indicates a deterioration of more than a limit margin; and g. repeating steps e and f for each further value of the estimate of the true spectrum to obtain a modified estimate of the true spectrum; h. repeating steps c to g for successive modified estimates of the true spectrum while reducing the limit margin. More completely, a method of detection of a spectrally resolved radiation dataset is described embodying the above.

Method of spectral data detection and manipulation

A method of examination of an object comprising the steps of: applying a Nuclear Magnetic Resonance technique to obtain a data item correlated to the relative nuclear susceptibility within the sample; obtaining a further data item correlated to another measure of the object under examination; determining therefrom a ratio.

Identification of materials from a hydrogen to electron ratio

A conveyor system for use with a scanning apparatus for scanning of contained materials such as liquids within containers such as bottles. The system includes a transverse conveyor having a conveyor surface, a plurality of container support modules each adapted to seat on the conveyor surface. Each container support module includes a lower surface that sits upon the conveyor surface of the conveyor and upper part in which a container-receiving recessed portion is defined.

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Sedgefield, United Kingdom

Andrew Keith Powell