| 摘要 |
PROBLEM TO BE SOLVED: To provide a scintillation detector that will not have average DC level from varying, even with respect to significant changes in the luminance of incident radiation. SOLUTION: A negative bias voltage is applied to a photocathode K from a bias power supply terminal 6, in order to bring the anode A of a photomultiplier tube 2 to be at the zero potential. Rather than DC coupling, AC coupling using a capacitor is configured in each of signal paths between the output of the photomultiplier tube 2 and the input of a DC-type waveform shaping amplifier 3, and between an output of the DC-type waveform shaping amplifier 3 and an output terminal 5 of the scintillation detector. COPYRIGHT: (C)2008,JPO&INPIT
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