{"term":{"id":"05236","title":"reflection electron energy loss spectroscopy","longtitle":"IUPAC Gold Book - reflection electron energy loss spectroscopy","doi":"10.1351\/goldbook.R05236","code":"R05236","status":"current","acronym":"<em>acronyms<\/em>: REELS, HRELS","synonym":"<em>synonym<\/em>: high resolution energy loss spectroscopy","definitions":[{"id":1,"text":"Any technique in which a specimen is bombarded with a focused low energy (\\(E_{0} < 10\\ \\rm{eV}\\)) electron beam and the energy distribution of the reflected electrons is measured. This energy distribution contains features corresponding to discrete losses of energy of the reflected electrons due to excitation of vibrational and plasmon states and provides information on the type and geometric structure of compounds at the surface of the specimen.","sources":["PAC, 1983, 55, 2023. 'Nomenclature, symbols and units recommended for in situ microanalysis (Provisional)' on page 2025 (https:\/\/doi.org\/10.1351\/pac198355122023)"]}],"altoutputs":{"html":"https:\/\/goldbook.iupac.org\/terms\/view\/R05236\/html","xml":"https:\/\/goldbook.iupac.org\/terms\/view\/R05236\/xml","plain":"https:\/\/goldbook.iupac.org\/terms\/view\/R05236\/plain"},"citation":"Citation: 'reflection electron energy loss spectroscopy' 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.R05236","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":"2026-05-11T10:39:39+00:00"}}