Pulse shape discrimination method and apparatus for high-sensitivity radioisotope identification with an integrated neutron-gamma radiation detector
US7388206B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 16, 2006 |
| Grant date | Jun 17, 2008 |
| Priority date | — |
| Expiry date | Jan 19, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01T1/17
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
A method and apparatus for discriminating the types of radiation interacting with an integrated radiation detector having of a pulse-mode operating photosensor which is optically coupled to a gamma-ray scintillator sensor and a neutron scintillator sensor and uses an analog to digital converter (ADC) and a charge to digital converter (QDC) to determine scintillation decay times and classify radiation interactions by radiation type. The pulse processing provides for, among other things, faithful representation of the true energy spectrum of the gamma radiation field and allows for radioisotope identification by searching for the presence of characteristic energy lines in the gamma energy spectrum. The pulse shape discrimination method ensures that the high sensitivity and resolution of the isotope identification function is not affected during operation in mixed neutron-gamma fields.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.