| 摘要 |
A method of producing a rare earth oxysulfide scintillating ceramic body includes heat treatment to form a consolidated body, followed by gas hot isostatic pressing (GHIPing). A powder is first provided having the general formula (M<SUB>1-x</SUB>Ln<SUB>x</SUB>)<SUB>2</SUB>O<SUB>2</SUB>S, wherein M is a rare earth element, and Ln is at least one element selected from the group consisting of Eu, Ce, Pr, Tb, Yb, Dy, Sm, and Ho, and 1x10<SUP>-6</SUP><X<2x10<SUP>-1</SUP>. The powder is heat treated to form a consolidated body having closed porosity, wherein heat treating is carried out at a temperature T<SUB>ht</SUB>. The consolidated body is GHIPed to a density not less than 99% of theoretical density, in a GHIPing environment having a temperature T<SUB>hip</SUB>, where 1100° C.<T<SUB>hip</SUB><1500° C., to thereby form a densified body.
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