Resonance ion ejection

{
  "id": "MLC-T-CHM-010252",
  "term": "Resonance ion ejection",
  "field": "Chemistry",
  "definition": "A technique for selectively removing ions from an ion trap mass spectrometer by applying a supplementary alternating current voltage to the trap's electrodes. When the frequency of this applied voltage matches the natural oscillation frequency (secular frequency) of an ion with a specific mass-to-charge ratio, its motion becomes unstable. The ion's oscillation amplitude increases until it is expelled from the trapping field and can be detected or discarded.",
  "subject": "Analytical Chemistry",
  "see_also": [
    "ion trap"
  ],
  "references": [
    "PAC, 2013, 85, 1515. 'Definitions of terms relating to mass spectrometry (IUPAC Recommendations 2013)' on page 1586 (https://doi.org/10.1351/PAC-REC-06-04-06)"
  ],
  "url": "https://mlchart.com/terminology/chemistry/resonance-ion-ejection/"
}