08752 IUPAC Gold Book - positron lifetime spectrometry 10.1351/goldbook.08752 08752 current initialism: PLS synonym: positron annihilation lifetime spectrometry (PALS) 1 Measurement method of positron annihilation analysis in which the time interval between the emission of positrons from a radioactive source and the detection of gamma rays due to the annihilation of these positrons with electrons from the surrounding matter is the lifetime of the positron or positronium. positron annihilation analysis https://goldbook.iupac.org//terms/view/08750 PAC, 2021, 93, 69. 'Vocabulary of radioanalytical methods (IUPAC Recommendations 2020)' on page 92 (https://doi.org/10.1515/pac-2019-0302) https://goldbook.iupac.org/terms/view/08752/html https://goldbook.iupac.org/terms/view/08752/json https://goldbook.iupac.org/terms/view/08752/plain Citation: 'positron lifetime spectrometry' 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.08752 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. 2026-06-13T14:30:35+00:00