放射性测量.γ辐射放射性核素.γ射线光谱仪校准用参考测量标准规范

[中文适用范围]： 本文件指定了固态、液态或气态γ射线发射性同位素源的特点，用于作为参考测量标准，以校准γ射线能谱仪。这些参考测量标准可追溯到国家计量标准。本文件未描述使用这些参考测量标准校准γ射线能谱仪的过程。相关过程在ISO 20042和其他文件中规定。本文件还推荐了用于校准γ射线能谱仪的参考辐射。本文件涵盖但不限于光子能量范围为60 keV至1836 keV的γ发射器。这些参考辐射以点源或充分扩展的形式体现，且可追溯到国家标准。实验室用于制备扩展标准的液态标准也在本文件范围内。根据ISO 17034生产的参考材料不在本文件范围内。 [外文原描述]： This document specifies the characteristics of solid, liquid or gas sources of gamma emitting radionuclides used as reference measurement standards for the calibration of gamma-ray spectrometers. These reference measurement standards are traceable to national measurement standards. This document does not describe the procedures involved in the use of these reference measurement standards for the calibration of gamma-ray spectrometers. Such procedures are specified in ISO 20042 and other documents. This document specifies recommended reference radiations for the calibration of gamma-ray spectrometers. This document covers, but is not restricted to, gamma emitters which emit photons in the energy range of 60 keV to 1 836 keV. These reference radiations are realized in the form of point sources or adequately extended sources specified in terms of activity which are traceable to national standards. Liquid standards that are intended to be used for preparing extended standards by the laboratories are also within the scope of this document. Reference materials (RMs) produced in accordance with ISO 17034 are out of scope of this document.