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STANDARD 6980-1
Third edition
2023-11
Nuclear energy — Reference beta-
particle radiation —
Part 1:
Methods of production
Énergie nucléaire — Rayonnement bêta de référence —
Partie 1: Méthodes de production
Reference number
ISO 6980-1:2023(E)
© ISO 2023
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ISO 6980-1:2023(E)
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Published in Switzerland
ii
© ISO 2023 – All rights reserved
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ISO 6980-1:2023(E)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 2
4 Requirements for reference beta-particle radiation fields at the calibration distance .2
4.1 Standard test conditions . 2
4.2 Energy of the reference radiation fields . 2
4.3 Shape of the beta-particle spectrum . 2
4.4 Uniformity of the dose rate . 3
4.5 Photon contamination . 3
4.6 Variation of the beta-particle emission with time . 3
5 Radionuclides suitable for reference beta-particle radiation fields .3
6 Source characteristics and their measurement . 4
6.1 Fundamental characteristics of reference sources . 4
6.1.1 Construction of reference sources . 4
6.1.2 Measurement and/or simulation of characteristics of the reference
radiation fields . 4
6.1.3 Beta particle contamination . 13
6.1.4 Photon contamination . 13
6.2 Characteristics of the two series of reference beta-particle radiation fields .13
6.2.1 General .13
6.2.2 Series 1 reference beta-par
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