| 摘要 |
PROBLEM TO BE SOLVED: To provide a radiation detector easy to fabricate and capable of high-resolution discrimination of the incidence position of radiation. SOLUTION: Photomultipliers 2a-2d are optically coupled to a scintillator group 1 with the scintillators arranged two-dimensionally to contact with each other. Optically transparent or translucent separators 3, locally covered by light reflecting masks as required, are in close contact with the plane mounted with scintillators 1 a1-1 f8. The positions and sizes of masks on the separators 3 are changed, relative to the order of arrangement of the scintillators, so that the light to be guided to the photoelectric surfaces of the photomultipliers 2a-2d is changed corresponding to the incidence position of gamma rays. The incidence position of gamma rays is determined by comparing the outputs of the photomultipliers 2a-2d with each other. COPYRIGHT: (C)2003,JPO
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