Penning excitation

in inductively-coupled plasma spectrometry
synonym: Penning ionization
https://doi.org/10.1351/goldbook.08515
Collisional excitation and ionization mechanism of inductively-coupled plasma spectrometry involving analyte atoms and metastable argon atoms.
Source:
PAC, 2021, 93, 647. 'Glossary of methods and terms used in analytical spectroscopy (IUPAC Recommendations 2019)' on page 726 (https://doi.org/10.1515/pac-2019-0203)