Method and equipment for discriminating materials by employing fast neutron and continuous spectral x-ray
US7399976B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Feb 14, 2006 |
| Grant date | Jul 15, 2008 |
| Priority date | — |
| Expiry date | Feb 19, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01V5/223
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Disclosed is a method of discriminating materials by employing fast neutron and continuous spectral X-ray and an equipment for the same. The method comprising the steps of: (a) transmitting a fast neutron beam produced by a fast neutron source and a continuous spectral X-ray beam produced by a continuous spectral X-ray source through inspected objects; (b) directly measuring the intensity of the transmitted X-rays and the intensity of the transmitted neutrons by a X-ray detector array and a neutron detector array respectively; and (c) identifying the materials of the inspected object by Z-dependency curves formed by the attenuation differences between the neutron beam and X-ray beam transmitted through different materials of the inspected object. This direct measurement of transmitted dual-ray technique has much more efficient than secondary radiations measurement such as neutron activation analysis, has much more material discrimination sensitivity than dual-energy x-ray technique. The respective measurements of neutrons and x-rays make the usages of high detect efficiency neutron detectors and x-ray detectors possible. The using continuous spectral x-ray produced by Linac adds mo…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.