IEC 61452:2021 核仪器.γ射线放射性核素放射性活度或发射率的测量.锗基光谱仪的校准和使用

标准编号：IEC 61452:2021

中文名称：核仪器.γ射线放射性核素放射性活度或发射率的测量.锗基光谱仪的校准和使用

英文名称：Nuclear instrumentation - Measurement of activity or emission rate of gamma-ray emitting radionuclides - Calibration and use of germanium-based spectrometers

发布日期：2021-06-04

标准范围

IEC 61452:2021建立了高纯度锗光谱仪的校准和使用方法，用于测量45 keV至约3 000 keV能量范围内的光子能量和发射率，并根据这些测量计算放射性核素活度。规定了自动找峰的最低要求。本文件建立了用校准源测量全能量峰值效率的方法。本文件的目的是为锗（HPGe）半导体探测器的常规校准和使用提供基础，用于测量γ射线发射率，从而测量样品中放射性核素的活性。它旨在供了解HPGe伽马射线能谱原理并负责开发校准和使用此类探测器的正确程序的人员使用。本文件主要用于常规分析测量。相关文件为IEC 60973和ISO 20042。这第二版取消并取代了1995年出版的第一版。与上一版相比，此版本包括以下重大技术变更:a.标题已修改；b.关于数字电子的附加信息；c.关于蒙特卡罗模拟的信息；d.参考检测限计算。

IEC 61452:2021 establishes methods for the calibration and use of high purity germanium spectrometers for the measurement of photon energies and emission rates over the energy range from 45 keV to approximately 3 000 keV and the calculation of radionuclide activities from these measurements. Minimum requirements for automated peak finding are stated. This document establishes methods for measuring the full-energy peak efficiency with calibrated sources.
The object of this document is to provide a basis for the routine calibration and use of germanium (HPGe) semiconductor detectors for the measurement of gamma-ray emission rates and thereby the activities of the radionuclides in a sample. It is intended for use by persons who have an understanding of the principles of HPGe gamma-ray spectrometry and are responsible for the development of correct procedures for the calibration and use of such detectors. This document is primarily intended for routine analytical measurements. Related documents are IEC 60973 and ISO 20042.
This second edition cancels and replaces the first edition published in 1995. This edition includes the following significant technical changes with respect to the previous edition:
a. title modified;
b. additional information on digital electronics;
c. information on Monte Carlo simulations;
d. reference to detection limits calculations.

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