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钻孔的不利环境影响半导体和闪烁体γ射线探测器的性能,这种情况在实验室应用中是不常见的。特别是,几乎所有的无机闪烁体的闪烁效率都是随温度的增加而降低的,尽管降低的速率是变化的,这个变化系数大约是10。闪光输出的降低影响信噪比、能量分辨率和增益控制。闪光的衰减时间通常也与温度有关,因此影响脉冲形状和计数率。发光光谱会随温度变化而位移,这与高温光阴极较窄的响应特性结合在一起,就需要特别注意闪烁体与光电倍增管的兼容性。钻孔中遇到的震动足以损坏探测器,因此,建议使用机械性能坚固的探测器和不易潮解的闪烁体,以避免因特殊封装而减小探测器的体积、降低其性能。
The adverse environmental impact of drilling affects the performance of semiconductor and scintillator gamma-ray detectors, a situation that is uncommon in laboratory applications. In particular, the scintillation efficiency of almost all inorganic scintillators decreases with increasing temperature, although the rate of decrease varies and the coefficient of variation is about 10%. The reduction in flash output affects signal-to-noise ratio, energy resolution, and gain control. The decay time of the flash is also usually temperature dependent, thus affecting the pulse shape and count rate. The emission spectrum shifts with temperature, which, combined with the narrower response characteristics of the high-temperature photocathode, requires special attention to the compatibility of the scintillator and the photomultiplier tube. Vibrations encountered in the borehole are sufficient to damage the detector. Therefore, it is advisable to use mechanically robust detectors and non-deliquescent scintillators to minimize the size and performance of the detector due to special packaging.