Method and system for detecting substances, such as special nuclear materials
US7381962B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 14, 2004 |
| Grant date | Jun 3, 2008 |
| Priority date | — |
| Expiry date | Dec 14, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01V5/281
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A system for detecting substances, the system including a dual-energy radiography (DER) system including a gamma-ray radiation source, including a beam accelerator and a target to which the accelerator sends a beam thereby producing gamma rays, and a plurality of gamma ray detectors positioned to detect gamma rays that pass from the gamma-ray radiation source through an object to be inspected, wherein the DER system is adapted to indicate a presence of a high-Z substance, by detecting a difference in a transmission attenuation characteristic of the high-Z substance as opposed to low-Z and medium-Z substances and differentiating among high-Z substances according to their density, as determined from a plurality of radiographic views.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.