X-ray diffraction inspection system
First Claim
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1. A method of inspecting parcels to detect the presence of selected crystalline materials in the presence of other crystalline and noncrystalline materials comprising:
- generating x-ray radiation from a source;
conveying a parcel containing crystalline and non-crystalline materials to be inspected continuously past the source to irradiate the materials with the radiation;
detecting radiation scattered by crystalline material within the parcel at a predetermined angle; and
analyzing a spectrum of the detected radiation to detect the presence of a selected crystalline material on or within the parcel.
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Abstract
An inspection system for detecting the presence of selected crystalline materials, such as explosives or drugs, utilizing an x-ray source and a collimated array of detectors to sense radiation scattered by the objects being inspected. A signal processing system compares the measured signal with selected spectra to determine whether specific materials are present within the inspected object.
130 Citations
15 Claims
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1. A method of inspecting parcels to detect the presence of selected crystalline materials in the presence of other crystalline and noncrystalline materials comprising:
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generating x-ray radiation from a source; conveying a parcel containing crystalline and non-crystalline materials to be inspected continuously past the source to irradiate the materials with the radiation; detecting radiation scattered by crystalline material within the parcel at a predetermined angle; and analyzing a spectrum of the detected radiation to detect the presence of a selected crystalline material on or within the parcel. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A method of inspecting parcels to detect the presence of selected crystalline materials in the presence of other crystalline and noncrystalline materials comprising:
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generating x-ray radiation from a source; conveying a parcel to be inspected past the source to irradiate the parcel with the radiation;
detecting radiation scattered by crystalline material within the parcel at a predetermined angle; andanalyzing a spectrum of the detected radiation to detect the presence of a crystalline explosive on or within the parcel.
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14. A method of inspecting parcels to detect the presence of selected crystalline materials in the presence of other crystalline and noncrystalline materials comprising:
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generating x-ray radiation from a source; conveying a parcel to be inspected past the source to irradiate the parcel with the radiation; detecting radiation scattered by crystalline material within the parcel at a predetermined angle; and analyzing a spectrum of the detected radiation to detect the presence of a crystalline narcotic or hallucinogenic drug on or within the parcel. - View Dependent Claims (15)
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Specification