Radiation scanning with photon tagging
US7630474B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 28, 2007 |
| Grant date | Dec 8, 2009 |
| Priority date | — |
| Expiry date | Dec 15, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2223/639
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
In accordance with an embodiment, a method of examining contents of objects comprises accelerating a plurality of electrons to a predetermined acceleration energy and colliding the accelerated electrons with a target. An object is scanned with the generated X-ray photons. First energies of X-ray photons are determined after scanning and second energies of accelerated electrons are determined after colliding with the target, and correlated. Energies of respective detected X-ray photons prior to scanning are determined based, at least in part, on the second energies of respective correlated accelerated electrons and the predetermined acceleration energy. A potential presence of suspect material is determined based, at least in part, on the first energies of respective X-ray photons after scanning and the third energies of the detected X-ray photons prior to scanning. Systems are also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.