Mass selective axial ejection

{
  "id": "MLC-T-CHM-006991",
  "term": "Mass selective axial ejection",
  "field": "Chemistry",
  "definition": "A method for ejecting ions from a quadrupole ion trap mass analyzer based on their mass-to-charge ratio. By applying an auxiliary alternating current voltage to the end-cap electrodes, ions with a specific secular frequency of oscillation along the z-axis are brought into resonance. This resonance destabilizes their trajectories, causing them to be ejected axially from the trap for detection.",
  "subject": "Analytical Chemistry",
  "see_also": [
    "ion trap",
    "mass selective instability"
  ],
  "references": [
    "PAC, 2013, 85, 1515. 'Definitions of terms relating to mass spectrometry (IUPAC Recommendations 2013)' on page 1565 (https://doi.org/10.1351/PAC-REC-06-04-06)"
  ],
  "url": "https://mlchart.com/terminology/chemistry/mass-selective-axial-ejection/"
}