Patent ID: 7531109

Claim:
A method of producing a rare earth oxysulfide scintillating ceramic body, comprising: providing a powder having the general formula (M 1-x Ln x ) 2 O 2 S, 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 T ht ; 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 T hip , where 1100° C.<T hip <1500° C., thereby forming a densified body.