Stabilized scintillator
AssigneeNational Technology & Engineering Solutions of Sandia, LLC
InventorsF. Patrick Doty, Pin Yang, Xiaowang Zhou
Life of this patent
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Abstract
A stabilized scintillator includes a compound corresponding to formula (2) or (3), or activated derivatives thereof: A2BB′xB″yX6 (2) A2BB′XxX′y (3) wherein A and B are monovalent cations, B′ is a trivalent cation, X is a halogen, x and y are molar percentages, x+y=1; B″ is an aliovalent exchange cation that has a different valence than B′, X′ is an aliovalent exchange anion that has a different valence than X. A method of preparing the stabilized scintillator is also disclosed.
Claims20
A stabilized scintillator, comprising:
- a compound corresponding to formula (3), or activated derivatives thereof:
- A2BB′XxX′y (3)
- wherein A and B are monovalent cations, B′ is a trivalent cation, X is a halogen, x and y are molar percentages, wherein x+y=6;
- X′ is an aliovalent exchange anion that has a different valence than X;
- wherein a crystal of the stabilized scintillator is clear throughout;
- wherein the stabilized scintillator has improved photoluminescence quantum yield over a base compound of structure (1)
- A2sBB′X6 (1)
- wherein A, B, B′ and X are the same as above.
A stabilized scintillator, comprising:
- a compound corresponding to formula (2), or activated derivatives thereof:
- A2BB′xB″yX6 (2)
- wherein A and B are monovalent cations, B′ is a trivalent cation, X is a halogen, x and y are molar percentages, wherein in formula (2) x+y=1, and B″ is an aliovalent exchange cation that has a different valence than B′;
- wherein a crystal of the stabilized scintillator is clear throughout;
- wherein the aliovalent exchange cation is selected from the list consisting of Zn2+, Cd2+, Pb2+;
- wherein the stabilized scintillator has improved photoluminescence quantum yield over a base compound of structure (1)
- A2BB′X6 (1)
- wherein A, B, B′ and X are the same as above.
A method for predicting improved stability in a scintillator, and synthesizing a stabilized scintillator, the method comprising:
- selecting a base scintillator compound, wherein the base scintillator compound is an elpasolite;
- calculating a reduced crystal energy of the base scintillator from the aliovalent exchange of an ion;
- selecting an aliovalent exchange ion based on the calculations;
- synthesizing the stabilized scintillator including a step of performing aliovalent exchange with the selected ion.
Dependencies are inferred from the claim text.