Process in which an electron, tunnelling from the conduction band of a solid, neutralizes an incoming ion and an electron is ejected from a surface atom.
Note: The ejected electron can be emitted into the vacuum.
Source:
PAC, 2020, 92, 1781. 'Glossary of methods and terms used in surface chemical analysis (IUPAC Recommendations 2020)' on page 1798 (https://doi.org/10.1515/pac-2019-0404)