Kinetic energy of a narrow Auger electron peak in a spectrum minus the kinetic energy of the most intense X-ray photoelectron peak from the same element.
Notes: - The value of the Auger parameter depends on the energy of the X-rays, which therefore needs to be specified.
- The Auger parameter is sometimes called the final state Auger parameter (see initial state Auger parameter).
- The Auger parameter is useful for separating chemical states for samples in which charging causes uncertainty in the binding energy measurement or in which the binding energy shift is inadequate to identify the chemical state.
- The Auger parameter is useful for evaluating the relaxation energy of the ionized matrix atom associated with the generation of a core hole for those Auger transitions between core levels, which have similar chemical shifts.
See also: modified Auger parameter
Source:
PAC, 2020, 92, 1781. 'Glossary of methods and terms used in surface chemical analysis (IUPAC Recommendations 2020)' on page 1820 (https://doi.org/10.1515/pac-2019-0404)