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在闪烁计数、能谱分析和一些精密的光度测量中,光电倍增管的工作稳定性是很重要的。光电倍增管的稳定性实质上是光电倍增管的增益随时间的漂移——疲劳效应。产生疲劳效应的因素很多,一般与阴极倍增极材料、制造工艺、环境温度、使用条件及测量仪器精度等有关。实验证明,光电倍增管除了通过选取材料、改进制造工艺及选择最佳工作条件以提高其工作稳定性外,用老练的方法对部分管子克服疲劳效应改善工作稳定性是有一定成效的。
The operational stability of a photomultiplier tube is important in scintillation counting, spectroscopy and some precision photometry. The stability of a photomultiplier tube is essentially the drift of the photomultiplier tube gain over time - the fatigue effect. Fatigue effects generated by many factors, generally with the cathode dynode material, manufacturing process, ambient temperature, conditions of use and accuracy of measuring instruments and so on. Experiments show that, in addition to improving the manufacturing process and selecting the best working conditions, the photomultiplier tube improves the working stability by using some methods to overcome the fatigue effect and improve the working stability.