Pulsed extraction field

{
  "id": "MLC-T-CHM-013454",
  "term": "Pulsed extraction field",
  "field": "Chemistry",
  "definition": "An electric field applied intermittently between a sample and the extraction optics of a mass spectrometer, particularly in secondary-ion mass spectrometry. The field is activated after a packet of secondary ions has been created, allowing the ions to drift before acceleration. This time-lag focusing technique compensates for the initial kinetic energy spread of the ions, resulting in higher achievable mass resolution compared to continuous extraction.",
  "subject": "Analytical Chemistry",
  "see_also": [
    "extraction field",
    "depth profiling",
    "secondary-ion mass spectrometry"
  ],
  "references": [
    "PAC, 2020, 92, 1781. 'Glossary of methods and terms used in surface chemical analysis (IUPAC Recommendations 2020)' on page 1843 (https://doi.org/10.1515/pac-2019-0404)"
  ],
  "url": "https://mlchart.com/terminology/chemistry/pulsed-extraction-field/"
}