Granted Patent
B2
US 12,466,998 · App. 18/434,280 · Granted Nov 11, 2025
Scintillation compound including a rare earth element and a process of forming the same
Inventors:
Samuel Blahuta (Besancon, FR); Eric E. Mattmann (Paris, FR); Damien Pauwels (Mandelieu, FR); Bruno Viana (Montgeron, FR)
Assignee:
Luxium Solutions, LLC
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Abstract
A scintillation compound can include a rare earth silicate. The rare-earth silicate may be lutetium yttrium orthosilicate. The rare-earth silicate may be doped with Ce. The rare-earth silicate doped with Ce may include a rare-earth element in a tetravalent state at a concentration of at least approximately 10 ppm atomic of the scintillation compound.
Claims (12)
1 . A scintillation compound comprising a rare-earth silicate, wherein the rare-earth silicate is lutetium yttrium orthosilicate, the rare-earth silicate is doped with Ce, and the Ce is in a tetravalent state at a concentration of at least approximately 10 ppm atomic of the scintillation compound.
2 . The scintillation compound of claim 1 , wherein an absorbance of the scintillation material at a wavelength of 357 nm is less than an absorbance of the scintillation material at 280 nm.
3 . The scintillation compound of claim 1 , wherein the scintillation compound is used within a radiation detection apparatus, a positron emission tomography scanner, a laser device, or an optical storage device.
4 . The scintillation compound of claim 1 , wherein the scintillation compound has an afterglow of less than 200 ppm after 100 ms relative to the intensity measured during an X-ray irradiation.
5 . The scintillation compound of claim 1 , wherein the rare earth element in the tetravalent state is at a concentration no greater than approximately 5000 ppm atomic in the scintil-lation compound.
6 . The scintillation compound of claim 1 , wherein the rare earth element in a tetravalent state is at a concentration no greater than approximately 500 ppm atomic of the scintillation compound.
7 . The scintillation compound of claim 4 , wherein cerium representing 0.005 mol % to 20 mol % of all the rare earths included in the scintillation compound.
8 . The scintillation compound of claim 7 , wherein the scintillation compound is codoped with a divalent alkaline earth M or a trivalent metal M′.
9 . The scintillation compound of claim 8 , wherein the mass of codopant in the scintillation compound is less than the mass of cerium in the scintillation compound.
10 . The scintillation compound of claim 8 , wherein M is selected from the group consisting of Ca, Mg, Sr, and Ba.
11 . The scintillation compound of claim 1 , wherein the scintillation compound has an energy resolution of 8.9%.
12 . A scintillation compound comprising a rare earth element in a tetravalent state at a concentration of at least approximately 10 ppm atomic of the scintillation compound, wherein the scintillation compound is a rare earth silicate compound and the rare earth silicate compound is lutetium yttrium orthosilicate.
Assignments (1)
INTELLECTUAL PROPERTY SECURITY AGREEMENT SUPPLEMENT
Recorded May 8, 2026
From: LUXIUM SOLUTIONS, LLC
To: GOLUB CAPITAL MARKETS LLC, AS COLLATERAL AGENT
Reel/Frame 075574/0443 →
Priority Claims (3)
FR 1059394
· Nov 16, 2010
· national
FR 1158466
· Sep 22, 2011
· national
FR 1158467
· Sep 22, 2011
· national
Continuity (9)
Continuation
13885966
Provisional Application
61540326
· Sep 28, 2011
Provisional Application
61540339
· Sep 28, 2011
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