IRRADIATION-INDUCED SCINTILLATION MATERIAL AND RADIATION COUNTING DEVICE OPERABLE AT HIGH TEMPERATUR

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PROBLEM TO BE SOLVED : To provide an irradiation-induced scintillation material suitable for a high-temperature operation in a nuclear fission reactor such as a light-water reactor and a nuclear fusion reactor and provide a radiation counting device provided with the scintillation material. SOLUTION : An irradiation-induced scintillation material operable at a high temperature can be produced by using a rare earth metal oxide, and a radiation counting device is produced by using the rare earth metal oxide. More particularly, the rare earth metal oxide is one or more substances selected from europium oxide (Eu2O3), gadolinium oxide (Gd2O3) and erbium oxide (Er2O3), and the radiation counting device is composed of an optical fiber, a light detector and the scintillation material placed at an end of the optical fiber. COPYRIGHT : (C)2006, JPO&NCIPI