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首页> 外文期刊>Applied radiation and isotopes: including data, instrumentation and methods for use in agriculture, industry and medicine >Development of a (147)Pm source for beta-backscatter thickness gauge applications.
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Development of a (147)Pm source for beta-backscatter thickness gauge applications.

机译：开发了用于（147）Pm源的β反向散射测厚仪。

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摘要

This paper describes a method for the preparation of (147)Pm sources, utilized in the determination of graphite coating thickness on the inner surface of the zircaloy cladding tube of nuclear fuels. (147)Pm was adsorbed on a limited surface area [1.5mm (varphi)x2mm (l)] of a cylindrical aluminum rod [1.5mm (varphi)x10mm (l)]. In brief, the selected tip area [1.5mm (varphi)x2mm (l)] was anodized at a current density of 15mA/cm(2) at 15 degrees C in 3M.H(2)SO(4) for 2h followed by immersion of this area in 10muL of (147)Pm solution containing 37MBq (1mCi) of activity at pH 6.0 for 24h. The radioactive area was subsequently covered with a thin layer of Polymethyl Methacrylate (PMMA) to prevent leaching of (147)Pm from the source. The quantity of incorporated (147)Pm activity was assayed in a calibrated ion chamber. Quality control tests were carried out to ensure nonleachability, uniform distribution of activity and stability of the sources.
机译：本文介绍了一种用于制备（147）Pm源的方法，该方法用于确定核燃料锆合金包层管内表面的石墨涂层厚度。 （147）Pm吸附在圆柱形铝棒[1.5mm（varphi）x10mm（l）]的有限表面积[1.5mm（varphi）x2mm（l）]上。简而言之，将选定的笔尖区域[1.5mm（varphi）x2mm（l）]在15M的3M.H（2）SO（4）中以15mA / cm（2）的电流密度进行阳极氧化2小时，然后进行将该区域浸入10ul含37MBq（1mCi）活性的pH值为6.0的（147）Pm溶液中24h。随后用聚甲基丙烯酸甲酯（PMMA）薄层覆盖放射性区域，以防止（147）Pm从源中浸出。掺入的（147）Pm活性的量在校准的离子室中测定。进行质量控制测试以确保不可浸出性，活性的均匀分布和源的稳定性。

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