| 摘要 |
A radiation sensor (10) comprising a scintillator (16) disposed on the incident light faceplate of a photomultiplier tube through an optical coupling member (14), in which a coating film (FLM) is so provided as to cover the scintillator and at least a part of a side tube (12b) of the photomultiplier tube. The scintillator is firmly secured to the photomultiplier tube through the coating film (FLM), and therefore the size of the radiation sensor is prevented from increasing.
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