Ceramic scintillator array, method for manufacturing same, radiation detector and radiation inspection device

A ceramic scintillator array comprising:

• a plurality of scintillator segments each composed of a sintered compact of a rare earth oxysulfide phosphor;
• and
• a reflective layer interposed between the scintillator segments adjacent to each other to integrate the plurality of scintillator segments, the reflective layer containing a transparent epoxy resin and reflective particles dispersed in the transparent epoxy resin, wherein the transparent epoxy resin is a two-component epoxy resin curable at room temperature;
• wherein the reflective particles contain titanium oxide and at least one inorganic substance selected from the group consisting of alumina, zirconia, and silica;
• and
• wherein a glass transition point of the transparent epoxy resin is 60° C. or higher, and a thermal expansion coefficient of the transparent epoxy resin at a temperature higher than the glass transition point is 2.5×10−5/° C. or less.