{"term":{"id":"09267","title":"photoionization cross section","longtitle":"IUPAC Gold Book - photoionization cross section","doi":"10.1351\/goldbook.09267","code":"09267","status":"current","definitions":[{"id":1,"text":"Total ionization cross section for an incident photon of a given energy interacting with a material to produce one or more photoelectrons from all sub-shells that are energetically accessible.","links":[{"term":"sub-shell photoionization cross section","url":"https:\/\/goldbook.iupac.org\/\/terms\/view\/09357"}],"sources":["PAC, 2020, 92, 1781. 'Glossary of methods and terms used in surface chemical analysis (IUPAC Recommendations 2020)' on page 1809 (https:\/\/doi.org\/10.1515\/pac-2019-0404)"]}],"altoutputs":{"html":"https:\/\/goldbook.iupac.org\/terms\/view\/09267\/html","xml":"https:\/\/goldbook.iupac.org\/terms\/view\/09267\/xml","plain":"https:\/\/goldbook.iupac.org\/terms\/view\/09267\/plain"},"citation":"Citation: 'photoionization cross section' 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.09267","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":"2026-04-20T14:54:07+00:00"}}