Patent ID: 7482602

Claim:
A scintillator plate for radiation comprising a substrate having thereon a phosphor layer comprising CsI and two or more activators each having a melting point different from a melting point of CsI, the scintillator plate emitting light at wavelengths of 300 to 800 nm when irradiated with radiation, wherein each content of the two or more activators is 0.01 mol % or more based on CsI; the scintillator plate is produced by forming the phosphor layer on the substrate via a vacuum evaporation method using a source material comprising CsI and the two or more activators; wherein the two or more activators comprise a first activator having a melting point within ±50° C. of the melting point of CsI; the two or more activators comprise a second activator having a melting point different from the melting point of the first activator by 100° C. or more, and the second activator is thallium iodide.