DIN EN ISO 23547:2023-10: Measurement of radioactivity - Gamma emitting radionuclides - Reference measurement standard specifications for the calibration of gamma-ray spectrometers (ISO 23547:2022); German version EN ISO 23547:2023

This standard describes the properties of solid, liquid or gaseous gamma-emitting radionuclides used as reference measurement standards for the calibration of gamma spectrometers. These reference measurement standards are traceable to national measurement standards. It also applies to liquid standards for the preparation of extended standards by laboratories. The standard gives recommended reference radiations for the calibration of gamma spectrometers. It covers, but is not limited to, gamma emitters emitting photons in the energy range 60 keV to 1.836 keV. These reference radiations are realized in the form of point sources or large area sources, specified in their activity and traceable to national standards. The standard does not describe the procedures associated with the use of these reference measurement standards for the calibration of gamma spectrometers. Such procedures are described in ISO 20042 and other documents. Reference materials produced according to ISO 17034 are also not subject to this standard.