Title: fixed product ion spectrum Long Title: IUPAC Gold Book - fixed product ion spectrum DOI: 10.1351/goldbook.F02407 Status: current Definition A spectrum obtained when data are acquired that determine all the parent ion mass-to-charge ratios that react to produce a selected daughter ion mass-to-charge ratio. Source - PAC, 1991, 63, 1541. 'Recommendations for nomenclature and symbolism for mass spectroscopy (including an appendix of terms used in vacuum technology). (Recommendations 1991)' on page 1551 (https://doi.org/10.1351/pac199163101541) Other Outputs - html: https://goldbook.iupac.org/terms/view/F02407/html - json: https://goldbook.iupac.org/terms/view/F02407/json - xml: https://goldbook.iupac.org/terms/view/F02407/xml Citation: Citation: 'fixed product ion spectrum' 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.F02407 License: 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. Collection: If you are interested in licensing the Gold Book for commercial use, please contact the IUPAC Executive Director at executivedirector@iupac.org . Disclaimer: 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. Accessed: 2026-04-18T01:32:40+00:00