本标准旨在规定一系列测试配置的现场伽马射线测量系统校准的性能测试。本标准适用于使用HPGe探测器（以下简称a？detectorsa？）的现场伽马能谱对放射源进行或要求进行放射分析的服务提供商及其客户。通常假设（但不是必需的）辐射源很大（相对于探测器而言）。此外，还假设在进行校准时，没有使用与被测物体在放射性核素混合和几何结构方面相同的认证参考材料。本标准适用于未校准或准直探测器的校准，用于测量以下物体: 均匀污染的表面土壤； 平面物体的表面污染； ？圆柱形和矩形物体的体积污染； 集装箱化均质源（圆柱形和矩形容器）； 衰减源； 本标准中涉及的伽马射线能量为60千电子伏至3000千电子伏。

The purpose of this standard is to specify performance tests for the calibrations of in-situ gamma-ray measurement systems for a range of test configurations. This standard applies to service providers and their customers performing or requiring radioassay of sources using in-situ gamma-ray spectrometry with HPGe detectors (hereafter referred to as "detectors"). It is generally assumed, but not required, that the sources are large (with respect to the detector). It is also assumed that the calibration is performed without the benefit of certified reference materials that are identical, in terms of the radionuclide mix and geometry, to the objects being measured. This standard applies to the calibration of detectors, uncollimated or collimated, for the measurement of the following objects: — Uniformly contaminated surface soils; — Surficial contamination of flat objects; — Volumetric contamination of cylindrical and rectangular objects; — Containerized homogeneous sources (cylindrical and rectangular containers); — Attenuated sources; The energy of the gamma-rays addressed in this standard is 60 keV to 3000 keV.