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美国橡树岭ORTEC公司研制成一种可携式X荧光分析仪。此仪器能在矿山现场测定金的含量,灵敏度可达20ppm。仪器能适应矿山上的高温、高湿度、震动及粉尘环境。 分析仪由手提式探头、主机及支架组成。探头内装有120mCi~(109)Cd放射源、高纯锗探测器、小型液氮冷却器及前置放大器等。主机是一台高计数率高分辨率的小型γ谱仪系统,重约7kg。~(109)Cd源置于带有钼滤光片的钨准直器内。钼片的作用是过滤源的22keV X射线。用液氮冷却高纯锗探测器和前置放大器的场
Oak Ridge ORTEC company developed a portable X fluorescence analyzer. This instrument can determine the gold content in the mine site, the sensitivity of up to 20ppm. The instrument can adapt to the high temperature on the mine, high humidity, vibration and dust environment. Analyzer by the portable probe, the host and bracket components. The probe is equipped with 120mCi ~ (109) Cd radioactive sources, high purity germanium detectors, small liquid nitrogen cooler and preamplifier. The mainframe is a high-count, high-resolution, compact gamma spectrometer system weighing about 7kg. The ~ (109) Cd source is placed in a tungsten collimator with a molybdenum filter. The role of the molybdenum sheet is to filter the source of 22 keV X-rays. Liquid nitrogen cooled high purity germanium detector and pre-amplifier field