Stoppage to the otherwise constant flow of argon gas to the atomizer in
electrothermal atomic absorption spectroscopy, that can be programmed to occur during atomization, for the purpose of increasing the residence time of the analyte atoms and thus the associated signal.
Source:
PAC, 2021, 93, 647. 'Glossary of methods and terms used in analytical spectroscopy (IUPAC Recommendations 2019)' on page 735 (https://doi.org/10.1515/pac-2019-0203)