09378 IUPAC Gold Book - probe ion 10.1351/goldbook.09378 09378 current 1 Ion intentionally produced by an ion source and directed onto the sample surface at a known angle of incidence and a known energy. PAC, 2020, 92, 1781. 'Glossary of methods and terms used in surface chemical analysis (IUPAC Recommendations 2020)' on page 1834 (https://doi.org/10.1515/pac-2019-0404) https://goldbook.iupac.org/terms/view/09378/html https://goldbook.iupac.org/terms/view/09378/json https://goldbook.iupac.org/terms/view/09378/plain Citation: 'probe ion' 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.09378 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. 2026-04-18T17:49:04+00:00