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US 2026/0226348 A1Published application
Scintillator crystal having cerium, calcium, and magnesium doped lyso and associated methods
AssigneeCrystal Photonics, Incorporated
InventorBruce CHAI
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Abstract
A scintillator crystal may include a monocrystalline structure of cerium, calcium and magnesium doped lutetium yttrium orthosilicate (LYSO), Ce2x Ca2y Mg2z (Lup Yq)2(1-x-y-z) SiO5, wherein x is between 0.0003 to 0.001, y is between 0.0005 to 0.003, and z is between 0.0003 to 0.001. The monocrystalline structure has an R value less than 5 corresponding to the decay time in nanoseconds divided by the light yield with respect to a Bismuth Germanium Oxide (BGO) reference.
Claims37
A scintillator crystal, comprising:
- a monocrystalline structure of cerium, calcium and magnesium doped lutetium yttrium orthosilicate (LYSO), Ce2x Ca2y Mg2z (Lup Yq)2(1-x-y-z) SiO5, wherein
- x is between 0.0003 to 0.001;
- y is between 0.0005 to 0.003;
- z is between 0.0003 to 0.001;
- and
- the monocrystalline structure has an R value less than 5 corresponding to the decay time in nanoseconds divided by the light yield with respect to a Bismuth Germanium Oxide (BGO) reference.
3 more elements
A scintillator crystal, comprising:
- a monocrystalline structure of cerium, calcium and magnesium doped lutetium yttrium orthosilicate (LYSO) wherein
- cerium is about 0.03 at % to about 0.1 at %;
- calcium is about 0.05 at % to about 0.3 at %;
- and
- magnesium is about 0.03 at % to about 0.1 at %.
2 more elements
A method of making a scintillator crystal from a melt comprising:
- preparing a melt comprising cerium, calcium and magnesium doped lutetium yttrium orthosilicate (LYSO), Ce2x Ca2y Mg2z (Lup Yq)2(1-x-y-z) SiO5, wherein
- x is between 0.0003 to 0.001;
- y is between 0.0005 to 0.003;
- z is between 0.0003 to 0.001;
- and
- growing a monocrystalline structure from the melt, the monocrystalline structure having an R value less than 5 corresponding to the decay time in nanoseconds divided by the light yield with respect to a Bismuth Germanium Oxide (BGO) reference.
3 more elements
Dependencies are inferred from the claim text.