{"term":{"id":"03050","title":"inner orbital X-ray emission spectra","longtitle":"IUPAC Gold Book - inner orbital X-ray emission spectra","doi":"10.1351\/goldbook.I03050","code":"I03050","status":"current","definitions":[{"id":1,"text":"X-ray spectral lines generated by the transition of electrons between 'inner orbitals'. The term 'inner orbital' serves to designate the sharp, not degenerate electronic levels of atoms in a solid and therefore is a general term for all orbitals except the valence band.","links":[{"term":"valence band","url":"https:\/\/goldbook.iupac.org\/\/terms\/view\/V06589"}],"sources":["PAC, 1983, 55, 2023. 'Nomenclature, symbols and units recommended for in situ microanalysis (Provisional)' on page 2026 (https:\/\/doi.org\/10.1351\/pac198355122023)"]}],"altoutputs":{"html":"https:\/\/goldbook.iupac.org\/terms\/view\/I03050\/html","xml":"https:\/\/goldbook.iupac.org\/terms\/view\/I03050\/xml","plain":"https:\/\/goldbook.iupac.org\/terms\/view\/I03050\/plain"},"citation":"Citation: 'inner orbital X-ray emission spectra' 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.I03050","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":"2026-05-18T01:23:44+00:00"}}