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US 11,340,360 B2Granted
CsI(TI) scintillator crystal including antiomy and other multi valence cations to reduce afterglow, and a radiation detection apparatus including the scintillation crystal
AssigneeSaint-Gobain Ceramics & Plastics, Inc.
InventorsFang Meng, Peter R. Menge
Life of this patent
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Abstract
A scintillation crystal can include a cesium halide that is co-doped with thallium and another element. In an embodiment, the scintillation crystal can include CsX:Tl, Me, where X represents a halogen, and Me represents a Group 5A element. In a particular embodiment, the scintillation crystal may have a cesium iodide host material, a first dopant including a thallium cation, and a second dopant including an antimony cation.
Claims20
A scintillator crystal comprising:
- a cesium iodide host material;
- a first dopant comprising a thallium cation, a molar concentration of said first dopant being less than 10%;
- a second dopant comprising antimony, wherein the scintillator crystal comprises greater than zero and less than 0.01 mol % of the second dopant;
- and
- a third dopant comprising bismuth, wherein the scintillator crystal has a reduced afterglow.
2 more elements
A scintillator crystal comprising:
- a cesium iodide host material;
- a first dopant comprising a thallium cation, a molar concentration of said first dopant being less than 10%;
- a second dopant comprising a group VA element, wherein the quantity of the second dopant in the scintillator comprises between 1×10−7 mol % and 0.1 mol %;
- and
- a third dopant comprising a trivalent bismuth.
2 more elements
A radiation detection apparatus comprising:
- a housing;
- a scintillator within the housing, the scintillator comprising:
- a cesium iodide host material;
- a first dopant comprising a thallium cation, a molar concentration of said first dopant being less than 10%;
- a second dopant comprising an antimony cation, wherein a concentration of the second dopant in the scintillator crystal is greater than zero and no greater than 0.01 mol %;
- and
- a third dopant comprising bismuth, wherein the scintillator has a reduced afterglow.
4 more elements
Dependencies are inferred from the claim text.