| 摘要 |
PURPOSE:To make effective use of incident radiations and to obtain a reliable radiation detector with the package construction of high productivity, by pressing a partition plate and a light reflection plate of thin sheet to a means for isolating optically adjacent radiation detectors by using a cushion material. CONSTITUTION:The radiations which are made incident to the detector enter first a keep plate 12 in common use as a light shielding plate and the transmitted thereto, then the radiations arrive at a cushion material 10 which is mostly air and absorbs less radiations. The radiations transmitted through said material arrive at a scintillator after transmitting through a light reflection plate 11. Since the plate 11 is thin, the shape is deformed in conformity with the ruggedness of a scintillator 6 and a partition plate 9 and is further pressed by the material 10 and the plate 12, by which the reflection plate is brought into tight contact with the scintillator 6 and the partition plate. Light is thereby reflected and the adjacent detectors are optically isolated. A thin Al sheet having a specular surface or a thin sheet having high reflectivity by depositing Al with evaporation on a polymer resin sheet and forming a specular surface is used for the plate 11.
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