01581 IUPAC Gold Book - delayed neutrons 10.1351/goldbook.D01581 D01581 current 1 Neutrons emitted by fission products formed by nuclear decay (the observed delay is due to the preceding nuclear decay or decays). fission products https://goldbook.iupac.org//terms/view/F02400 nuclear decay https://goldbook.iupac.org//terms/view/N04227 PAC, 1982, 54, 1533. 'Glossary of terms used in nuclear analytical chemistry (Provisional)' on page 1546 (https://doi.org/10.1351/pac198254081533) https://goldbook.iupac.org/terms/view/D01581/html https://goldbook.iupac.org/terms/view/D01581/json https://goldbook.iupac.org/terms/view/D01581/plain Citation: 'delayed neutrons' in IUPAC Compendium of Chemical Terminology, 5th ed. International Union of Pure and Applied Chemistry; 2025. Online version 5.0.0, 2025. 10.1351/goldbook.D01581 The IUPAC Gold Book is licensed under Creative Commons Attribution-ShareAlike CC BY-SA 4.0 International (https://creativecommons.org/licenses/by-sa/4.0/) for individual terms. If you are interested in licensing the Gold Book for commercial use, please contact the IUPAC Executive Director at executivedirector@iupac.org . The International Union of Pure and Applied Chemistry (IUPAC) is continuously reviewing and, where needed, updating terms in the Compendium of Chemical Terminology (the IUPAC Gold Book). Users of these terms are encouraged to include the version of a term with its use and to check regularly for updates to term definitions that you are using. 2026-08-05T09:26:35+00:00