Radiation probe system and method
US9689991B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 2, 2015 |
| Grant date | Jun 27, 2017 |
| Priority date | — |
| Expiry date | Jan 20, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01T1/169
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
A radiation probe system and method incorporating adaptive gamma radiation background subtraction for enhanced radiation detection capability is disclosed. The system and method are generally applicable to radiation “frisking” applications in which the contamination area may have high gamma radiation background levels that normally would result in loss of contamination radiation detection accuracy. Readings from a background radiation detector (BRD) are subtracted from a contamination radiation detector (CRD) to determine a count rate solely associated with contamination. A background subtraction factor (BSF) is used to scale the BRD subtraction and is automatically adjusted based on environmental conditions. A smoothing algorithm is used to increase/decrease the BRD and/or CRD acquisition times to account for signal variations in BRD/CRD measurement readings. The system and method provide for lower limit of detection (LLD) radiation levels that are below that of conventional radiation detectors.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.