闪烁探测器—计算机测量系统

Measuring Systems with Detector/Multichannel Analyser/Microcomputer

摘要: 本文报道配置在МИ1301型质谱计上的闪烁探测器—计算机测量系统。闪烁探测器包括由离子入口缝、法拉第筒、离子—电子转换电极、闪烁晶体、光导管和光电倍增管组成的转换电极室;由振簧静电计、记录仪组成的直流测量装置;由脉冲放大器、多道分析器、磁场—多道扫描器、打印机、扫谱仪组成的脉冲计数测量装置。计算机采用匈牙利EMG666微机,自行设计多道分析器—计算机接口。对本测量系统的转换效率、脉冲幅度分布以及转换电压等多种条件与探测器性能的关系进行了系统的测定。用本系统测定的铷同位素丰度比为2.596±0.003,无质量歧视效应。

Abstract: The measuring systems with scintillation detector/multichannel analyser/microcomputer on a modified type МИ1301 mass spectrometer are reported inthe pressnt paper. The scintillation detector consists of a vaccum house, a de-vice measuring ion current and a device measuring pulse-counts. The detectoris combined with FH-451 1024 multi-channel analyser/EMG666 microcomputer.The detected effeciency, pulse height distibution and other performances ofthe systems have been determined. The isotopic abundance for ~(85)Rb/~(87)Rb is2.596±0.003 without mass discrimination by the systems.