| US 7,531,109 B2 | ||
| Rare earth oxysulfide scintillator and methods for producing same | ||
| Brian C. LaCourse, Pepperell, Mass. (US); and Morteza Zandi, Webster, Mass. (US) | ||
| Assigned to Saint-Gobain Ceramics & Plastics, Inc., Worcester, Mass. (US) | ||
| Filed on Jul. 18, 2006, as Appl. No. 11/488,905. | ||
| Claims priority of provisional application 60/702330, filed on Jul. 25, 2005. | ||
| Prior Publication US 2007/0027025 A1, Feb. 01, 2007 | ||
| Int. Cl. C09K 11/84 (2006.01) | ||
| U.S. Cl. 252—301.4S [264/21; 264/663; 264/664; 264/666] | 20 Claims |
| 1. A method of producing a rare earth oxysulfide scintillating ceramic body, comprising:
providing a powder having the general formula (M1-xLnx)2O2S, wherein M is at least one rare earth element, Ln is at least one element selected from the group consisting of Eu, Ce,
Pr, Tb, Yb, Dy, Sm, Nd, and Ho, and 1×10−6<x<2×10−1;
heat treating the powder to form a consolidated body having closed porosity, wherein heat treating is carried out at a temperature
Tht; and
gas hot isostatic pressing (GHIPing) the consolidated body to a density not less than 99% of theoretical density, in a GHlPing
environment having a temperature Thip, where 1100° C.<Thip<1500° C., thereby forming a densified body.
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