Scintillator compositions of alkali and rare-earth tungstates
US6585913B2 · kind B2 · utility
33Cited by
7References
29Claims
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Key dates
| Filing date | Jul 30, 2001 |
| Grant date | Jul 1, 2003 |
| Priority date | — |
| Expiry date | Oct 18, 2021 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC04B2235/44
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Scintillator compositions useful for the detection of high-energy radiation, such as X, &bgr;, or &ggr; radiation, contain alkali and rare earth pyrotungstates. In particular, the pyrotungstate is a double tungstate containing an oxide of an alkali metal selected from the group consisting of Na, K, Rb, and Cs and an oxide of a rare-earth element selected from the group consisting of Y, Gd, La, and Lu. The scintillators are characterized by high light output, reduced afterglow, short decay time, and high X-ray stopping power.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.