{"term":{"id":"08619","title":"inhomogeneous broadening","longtitle":"IUPAC Gold Book - inhomogeneous broadening","doi":"10.1351\/goldbook.08619","code":"08619","status":"current","definitions":[{"id":1,"text":"Line-broadening by mechanisms that arise from an ensemble of spectroscopically non-equivalent molecules of the same species. Such molecules exist, for example, when molecules occupy non-equivalent sites in a condensed phase, and when gaseous molecules have different velocities and, thus, shift the observed wavenumber differently through the Doppler effect.","links":[{"term":"Line-broadening","url":"https:\/\/goldbook.iupac.org\/\/terms\/view\/08503"},{"term":"wavenumber","url":"https:\/\/goldbook.iupac.org\/\/terms\/view\/08302"}],"sources":["PAC, 2021, 93, 647. 'Glossary of methods and terms used in analytical spectroscopy (IUPAC Recommendations 2019)' on page 750 (https:\/\/doi.org\/10.1515\/pac-2019-0203)"]}],"altoutputs":{"html":"https:\/\/goldbook.iupac.org\/terms\/view\/08619\/html","xml":"https:\/\/goldbook.iupac.org\/terms\/view\/08619\/xml","plain":"https:\/\/goldbook.iupac.org\/terms\/view\/08619\/plain"},"citation":"Citation: 'inhomogeneous broadening' 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.08619","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":"2026-07-26T02:06:23+00:00"}}