02457 IUPAC Gold Book - fluorescence yield 10.1351/goldbook.F02457 F02457 current 1 For a given transition from an excited state of a specified atom, the ratio of the number of excited atoms which emit a photon to the total number of excited atoms. excited state https://goldbook.iupac.org//terms/view/E02257 PAC, 1994, 66, 2513. 'Nomenclature for radioanalytical chemistry (IUPAC Recommendations 1994)' on page 2526 (https://doi.org/10.1351/pac199466122513) Orange Book, 2nd ed., p. 174 (https://media.iupac.org/publications/analytical_compendium/) https://goldbook.iupac.org/terms/view/F02457/html https://goldbook.iupac.org/terms/view/F02457/json https://goldbook.iupac.org/terms/view/F02457/plain Citation: 'fluorescence yield' 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.F02457 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. 2026-07-26T00:15:47+00:00