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一、铱-192γ照相源的制备在工业无损探伤工作中,γ射线探伤设备具有体积小、重量轻、携带方便、不依赖于外部能源、工作效率高等优点,适合于施工现场作业。近年来,γ射线探伤技术在高压容器和管路焊接,喷气式发动机维修保养等工作中获得越来越广泛的应用。放射性核素铱-192的γ射线能量适中,可用于厚度为6—100 mm范围内的钢铁材料无损探伤。铱-192是由铱-191在原子反应堆经中子照射而生成的。自然界的铱元素中含
I. Preparation of iridium-192 gamma photographic source In the field of industrial non-destructive testing, gamma-ray inspection equipment has the advantages of small size, light weight, easy to carry, independent of external energy and high work efficiency, and is suitable for construction site operations. In recent years, γ-ray detection technology in the high-pressure vessels and piping welding, jet engine maintenance and other work has been more and more widely used. Radionuclide iridium -192 γ-ray energy moderate, can be used for the thickness of 6-100 mm range of non-destructive testing of steel materials. Iridium-192 is generated by iridium-191 neutron irradiation in an atomic reactor. Iridium elements in the natural world