METHOD FOR PRODUCING RADIATION DETECTOR

A method for producing a radiation detector comprising pluralities of first and second cells constituted by scintillators having different compositions for different detection sensitivity distributions of radiation energy, pluralities of light-receiving elements, and reflective layers, comprising a step of forming first and second cell arrays having at least m×n first and second cells via reflective layers from first and second scintillator plates, wherein m and n are natural numbers of 2 or more, which may be the same or different; a step of cutting the first and second cell arrays to obtain first and second single arrays each having at least m×1 first and second cells via reflective layers; a step of aligning the first and second single arrays with a light-receiving element array having at least m×2 light-receiving elements; and a step of adhering the first and second single arrays to the light-receiving element array.