发明名称 |
SCINTILLATION CRYSTAL INCLUDING A CO-DOPED SODIUM HALIDE, AND A RADIATION DETECTION APPARATUS INCLUDING THE SCINTILLATION CRYSTAL |
摘要 |
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. |
申请公布号 |
US2016238718(A1) |
申请公布日期 |
2016.08.18 |
申请号 |
US201615043812 |
申请日期 |
2016.02.15 |
申请人 |
SAINT-GOBAIN CERAMICS & PLASTICS, INC. |
发明人 |
YANG Kan;MENGE Peter R.;Frank John M. |
分类号 |
G01T1/202;G01V5/06;G01T1/20 |
主分类号 |
G01T1/202 |
代理机构 |
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代理人 |
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主权项 |
1. A scintillation crystal comprising NaX:Tl, Me, wherein:
X represents a halogen; Me represents a Group 1 element, a Group 2 element, a rare earth element, or any combination thereof; each of Tl and Me has a dopant concentration of at least 1×10−5 mol %; and the scintillation crystal has a property including:
an energy resolution less than 6.4% when measured at 662 keV, 22° C., and an integration time of 1 microsecond; ora pulse decay time that is less than another scintillation crystal that has a composition of NaX:Tl. |
地址 |
Worcester MA US |