ISO 11483-2005 核燃料技术.钚源的制备以及利用α谱仪测定238Pu/239Pu同位素比值

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                   【英文标准名称】:     Nuclear fuel technology - Preparation of plutonium sources and determination of Pu/Pu isotope ratio by alpha spectrometry            【原文标准名称】:     核燃料技术.钚源的制备以及利用α谱仪测定238Pu/239Pu同位素比值            【标准号】:     ISO 11483-2005            【标准状态】:     现行            【国别】:     国际            【发布日期】:     2005-01    【实施或试行日期】: 【发布单位】: 国际标准化组织(ISO)【起草单位】: ISO/TC 85【标准类型】: ()【标准水平】: ()【中文主题词】: 测定;核燃料;光谱测定法;抽样方法;钚;试样制备;放射性废物;放射性同位素;核能【英文主题词】: specimen preparation;nuclear fuels;plutonium;spectrometry;nuclear energy;radioactive wastes;radioactive isotopes;determination;sampling methods【摘要】: This International Standard describes three simple and fast procedures to prepare plutonium sources and a procedure to measure the activity ratio of Pu to (Pu + Pu) by α spectrometry. The α spectrometry method is used for the determination of isotopic abundance of Pu in combination with mass spectrometry and eliminates the possible interferences of U in the latter method. It applies to the analysis of purified solutions of plutonium in 2 mol/l to 4 mol/l nitric acid containing 50 μg to 200 μg of plutonium per millilitre, as may result from the chemical treatment and purification preceding plutonium isotopic analysis by mass spectrometry.This International Standard applies to plutonium solutions free from Am and those containing less than 10% of other non-volatile impurities relative to the plutonium content. Anion exchange chromatography in accordance with ISO 8299:1993 , Subclauses 7.2 and 7.3, or solvent extraction chromatography in ISO 15366  are suitable purification methods.The methods given in this International Standard are intended for use in conjunction or in parallel with mass spectrometry for the isotopic analysis of plutonium in spent-fuel solutions or nuclear-grade plutonium products.【中国标准分类号】: F40【国际标准分类号】: 27_120_30【页数】: 18P;A4【正文语种】: 英语