| 摘要 |
PURPOSE:To prevent leakage of light by coating incident light surface exposure parts other than the surface of a scintillator and a junction surface with the scintillator with a light reflecting material. CONSTITUTION:A scintillator 2 cut in a rectangular prism is jointed to the incident light surface 5 of a photoelectron multiplier tube 8 through optical coupling grease 4. After the scintillator 2 and photoelectron multiplier tube 8 are jointed together, the exposed part of the incident light surface 5 of the multiplier tube 8 except the surface of the scintillator 2 and the joint surface with the scintillator is coated with a light reflecting material 1. Consequently, no light leakage occurs even when a scintillator which has a joint surface in a different shape from the incident light surface of the photoelectron multiplier tube is used. |
