09173 IUPAC Gold Book - Auger photoelectron coincidence spectroscopy 10.1351/goldbook.09173 09173 current acronym: APECS 1 Detection of an Auger electron and a core-level photoelectron, emitted from a solid irradiated by mono-energetic X-rays, within a sufficiently short time that the Auger electron shall arise from the decay of the particular core-hole associated with the photoelectron. PAC, 2020, 92, 1781. 'Glossary of methods and terms used in surface chemical analysis (IUPAC Recommendations 2020)' on page 1783 (https://doi.org/10.1515/pac-2019-0404) https://goldbook.iupac.org/terms/view/09173/html https://goldbook.iupac.org/terms/view/09173/json https://goldbook.iupac.org/terms/view/09173/plain Citation: 'Auger photoelectron coincidence spectroscopy' 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.09173 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. 2026-04-20T14:09:25+00:00