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γ闪烁谱仪包括高压稳定电源、γ闪烁探头、放大器、单道脉冲分析器、计数率仪等部分。作为整套仪器中的专用线路,它们较之通用设备可以适当地简化。此外,单道脉冲分析器的甄别阈由慢转同步马达连续调节。同时,计数率仪的数据则由自动记录仪加以描绘,因此,能谱的测绘得以自动进行。一次能谱测绘时间为十分钟。能量分辨率主要由晶体和光电倍加管决定。本仪器测得的能量分辨率为12%,线性为1%。
γ scintillation spectrometer includes high-voltage stable power supply, γ scintillation probe, amplifier, single pulse analyzer, counting rate meter and other parts. As a dedicated line in the complete instrument, they are much simplified compared to common equipment. In addition, the single pulse analyzer’s discriminating threshold is continuously adjusted by a slow-turn synchronous motor. At the same time, the data from the meter is plotted by the automatic recorder, so the mapping of the spectrum is done automatically. One time spectrum mapping time is ten minutes. Energy resolution is mainly determined by the crystal and photomultiplier tube. The instrument measured the energy resolution of 12%, linearity of 1%.