Electric potential, referenced to the sample, of the electrode defining the field above the sample and used to facilitate introduction of emitted ions into the mass spectrometer.
Notes: - In pulsed-extraction mode, the extractor voltage will be pulsed to the high value required to extract ions emitted from the sample by the primary-ion pulse for at least the time period necessary for the heaviest ion to pass through the extractor electrode and will then be reduced to the extraction bias voltage until the next pulse is required.
- This voltage, together with the separation distance between the sample and the extractor electrode, defines the extraction field.
Source:
PAC, 2020, 92, 1781. 'Glossary of methods and terms used in surface chemical analysis (IUPAC Recommendations 2020)' on page 1839 (https://doi.org/10.1515/pac-2019-0404)