Action to prevent
secondary ions from travelling through the mass spectrometer and being detected.
Note: This action is usually made by pulsing one of the relevant electrode potentials in time-of-flight mass spectrometers to deflect ions of a selected mass range in which intense peaks occur, so that those masses are not detected and thus do not cause unwanted detector saturation.
Source:
PAC, 2020, 92, 1781. 'Glossary of methods and terms used in surface chemical analysis (IUPAC Recommendations 2020)' on page 1837 (https://doi.org/10.1515/pac-2019-0404)