光电倍增管的阴极灵敏度 cathodic sensitivity of photomultiplier tube 光电倍增管的增益 gain of photomultiplier tube 光电倍增管计数器 photomultiplier counter ..
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保持各个光电倍增管的增益一致性对正电子发射断层成像（PET）的质量至为重要。
To make all PMTs' gains identical through auto-adjustment is important for ensuring the PET imaging quality.
光电倍增管的增益，是阳极输出电流和光电阴极中光电流的比值，直接关系到电源电压。
The gain of the PMT, that is the ratio of anode output current to the photoelectric current from the photocathode, is directly related to the supply voltage.
实验比较了高计数率下三种光电倍增管电压供给方式的增益变化和温度效应。
The gain stabilities and temperature effects were experimentally for three different bias voltage supply modes to photomultipliers at high counting rates.
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