08586 IUPAC Gold Book - depolarization ratio 10.1351/goldbook.08586 08586 current 1 Raman intensity with the electric vector of the scattered electromagnetic radiation perpendicular to that of the incident radiation divided by the Raman intensity with electric vectors parallel. In normal Raman scattering with linearly polarized exciting radiation, \(\rho \le 0.75\) for totally symmetric vibrations and \(\rho = 0.75\) for all other vibrations. Raman https://goldbook.iupac.org//terms/view/08669 electromagnetic radiation https://goldbook.iupac.org//terms/view/08242 normal Raman scattering https://goldbook.iupac.org//terms/view/08667 PAC, 2021, 93, 647. 'Glossary of methods and terms used in analytical spectroscopy (IUPAC Recommendations 2019)' on page 743 (https://doi.org/10.1515/pac-2019-0203) https://goldbook.iupac.org/terms/view/08586/html https://goldbook.iupac.org/terms/view/08586/json https://goldbook.iupac.org/terms/view/08586/plain Citation: 'depolarization ratio' 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.08586 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. 2026-06-05T01:39:53+00:00