Title: modified Auger parameter
Long Title: IUPAC Gold Book - modified Auger parameter
DOI: 10.1351/goldbook.09343
Status: current

Definition
Sum of the Fermi level referenced (see Fermi level referencing) kinetic energy of a narrow Auger electron peak in the spectrum and the binding energy of the most intense photoelectron peak from the same element.

Note
The modified Auger parameter is the sum of the Auger parameter and the energy of the X-rays responsible for the measured photoelectron peak. Unlike the Auger parameter, it does not depend on the energy of the X-rays.

Related Terms
- Auger parameter: https://goldbook.iupac.org//terms/view/09308
- Fermi level referencing: https://goldbook.iupac.org//terms/view/09332
- initial-state Auger parameter: https://goldbook.iupac.org//terms/view/09339

Source
- PAC, 2020, 92, 1781. 'Glossary of methods and terms used in surface chemical analysis (IUPAC Recommendations 2020)' on page 1827 (https://doi.org/10.1515/pac-2019-0404)

Other Outputs
- html: https://goldbook.iupac.org/terms/view/09343/html
- json: https://goldbook.iupac.org/terms/view/09343/json
- xml: https://goldbook.iupac.org/terms/view/09343/xml

Citation: Citation: 'modified Auger parameter' 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.09343
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Accessed: 2026-05-12T16:13:29+00:00