| abstract |
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 1-x Ln x ) 2 O 2 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 1×10 −6 <X<2×10 −1 . The powder is heat treated to form a consolidated body having closed porosity, wherein heat treating is carried out at a temperature T ht . The consolidated body is GHIPed to a density not less than 99% of theoretical density, in a GHIPing environment having a temperature T hip , where 1100° C.<T hip <1500° C., to thereby form a densified body. |