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Use of an optical fiber cable in scintillation counting system.

A scintillation detector is usually composed of a scintillator and a photomultiplier tube(PMT) enclosed in a single probe. In cases where the distance between the probe and the readout part of the instruments is long, electrical noise induced in the signal line occasionally becomes troublesome. If the PMT can be remotely separated from the scintillator, it will be possible not only to suppress the noise but also to reduce the weight of the probe. An optical fiber cable developed for communication use may be useful for transmitting scintillation light without interference of external noise. In this report, the possibility of transmission of the scintillation light produced in a scintillator to a PMT being remotely placed by connecting them with a conventional optical fiber cable is experimentally examined.