09271 IUPAC Gold Book - projected range 10.1351/goldbook.09271 09271 current 1 Distance from the surface at which an energetic ion or atom comes to rest in the sample, projected along the direction of the beam. Used in energetic-ion analysis, Rutherford backscattering spectrometry, and secondary-ion mass spectrometry. Calculations usually deal with the mean or average projected range for a large number of ions or atoms of the same species and the same energy. Rutherford backscattering spectrometry https://goldbook.iupac.org//terms/view/09178 range straggling https://goldbook.iupac.org//terms/view/09273 secondary-ion mass spectrometry https://goldbook.iupac.org//terms/view/09192 PAC, 2020, 92, 1781. 'Glossary of methods and terms used in surface chemical analysis (IUPAC Recommendations 2020)' on page 1810 (https://doi.org/10.1515/pac-2019-0404) https://goldbook.iupac.org/terms/view/09271/html https://goldbook.iupac.org/terms/view/09271/json https://goldbook.iupac.org/terms/view/09271/plain Citation: 'projected range' 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.09271 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. 2026-05-22T13:26:54+00:00