In
Auger electron spectroscopy, Auger-electron current arising from ionizations in the sample caused by
backscattered electrons divided by Auger-electron current arising directly from the primary electrons.
Source:
PAC, 2020, 92, 1781. 'Glossary of methods and terms used in surface chemical analysis (IUPAC Recommendations 2020)' on page 1821 (https://doi.org/10.1515/pac-2019-0404)