Scintillation crystal including a co-doped sodium halide
US11462338B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 25, 2020 |
| Grant date | Oct 4, 2022 |
| Priority date | — |
| Expiry date | Nov 14, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01T1/202
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
A scintillation crystal can include a sodium halide that is co-doped with thallium and another element. In an embodiment, the scintillation crystal can include NaX:Tl, Me, wherein X represents a halogen, and Me represents a Group 1 element, a Group 2 element, a rare earth element, or any combination thereof. In a particular embodiment, the scintillation crystal has a property including, for radiation in a range of 300 nm to 700 nm, an emission maximum at a wavelength no greater than 430 nm; or an energy resolution less than 6.4% when measured at 662 keV, 22° C., and an integration time of 1 microsecond. In another embodiment, the co-dopant can be Sr or Ca. The scintillation crystal can have lower energy resolution, better proportionality, a shorter pulse decay time, or any combination thereof as compared to the sodium halide that is doped with only thallium.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.