Radiation detector and radiation detection method
US9523776B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 2, 2014 |
| Grant date | Dec 20, 2016 |
| Priority date | — |
| Expiry date | Apr 12, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01T1/24
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
An embodiment of a radiation detector has: a light collecting member; a photo detector that can receive light collected by the light collecting member and count number of photons; a wavelength selector that can selectively transmit light based on the light emission of gas caused by alpha rays by selectively transmitting light of a wavelength in a specific range; a shielding device that is can switch between an opened state in which it transmits light and a closed state in which it shields light; and a counting unit that calculates an alpha dose based on a difference calculated by subtracting number of noise photons detected in the photo detector within a predetermined time period when the shielding device is in the closed state from the number of photons received by the photo detector within the predetermined time period when the shielding device is opened state.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.