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Barium iodide and strontium iodide crystals and scintillators implementing the same

United States Patent

8,580,149
November 12, 2013
View the Complete Patent at the US Patent & Trademark Office
Lawrence Livermore National Laboratory - Visit the Industrial Partnerships Office Website
In one embodiment, a material comprises a crystal comprising strontium iodide providing at least 50,000 photons per MeV. A scintillator radiation detector according to another embodiment includes a scintillator optic comprising europium-doped strontium iodide providing at least 50,000 photons per MeV. A scintillator radiation detector in yet another embodiment includes a scintillator optic comprising SrI.sub.2 and BaI.sub.2, wherein a ratio of SrI.sub.2 to BaI.sub.2 is in a range of between 0:1 A method for manufacturing a crystal suitable for use in a scintillator includes mixing strontium iodide-containing crystals with a source of Eu.sup.2+, heating the mixture above a melting point of the strontium iodide-containing crystals, and cooling the heated mixture near the seed crystal for growing a crystal. Additional materials, systems, and methods are presented.
Payne; Stephen A. (Castro Valley, CA), Cherepy; Nerine J. (Oakland, CA), Hull; Giulia E. (Rome, IT), Drobshoff; Alexander D. (Livermore, CA), Burger; Arnold (Nashville, TN)
Lawrence Livermore National Security, LLC (Livermore, CA), Fisk University (Nashville, TN)
12/ 255,375
20100044576
October 21, 2008
The United States Government has rights in this invention pursuant to Contract No. DE-AC52-07NA27344 between the United States Department of Energy and Lawrence Livermore National Security, LLC for the operation of Lawrence Livermore National Laboratory.