NF EN ISO 23547, M60-841 (07/2023)

This document specifies the characteristics of solid, liquid or gaseous sources of gamma-emitting radionuclides used as reference standards for the calibration of gamma spectrometers. These reference standards are traceable against national standards. This document does not describe the operating procedures related to the use of these reference standards for the calibration of gamma spectrometers. Such operating procedures are defined in ISO 20042 and other documents. This document specifies the recommended reference radiations for the calibration of gamma spectrometers. This document concerns, but is not limited to, gamma emitters that emit photons in the energy range between 60 keV and 1836 keV. These reference radiations come from point sources or sufficiently large sources, whose activity is specified and which are traceable in relation to national standards. Liquid standards that are intended for use in the preparation of extended standards by laboratories are also within the scope of this document. Reference materials (RMs) manufactured in accordance with ISO 17034 are outside the scope of this document.
(Automatic translation from French)