Quadrupolar axialization

{
  "id": "MLC-T-CHM-009722",
  "term": "Quadrupolar axialization",
  "field": "Chemistry",
  "definition": "A technique in Fourier transform ion cyclotron resonance mass spectrometry that moves trapped ions toward the center of the cell. A quadrupolar excitation field at about the cyclotron frequency converts the large-radius magnetron motion of the ions into cyclotron motion while the ions collide with a buffer gas, and collisional damping then shrinks the cyclotron radius. The result is a compact ion cloud on the trap axis before excitation and detection.",
  "subject": "Analytical Chemistry",
  "see_also": [
    "axialization",
    "cyclotron motion"
  ],
  "references": [
    "PAC, 2013, 85, 1515. 'Definitions of terms relating to mass spectrometry (IUPAC Recommendations 2013)' on page 1581 (https://doi.org/10.1351/PAC-REC-06-04-06)"
  ],
  "url": "https://mlchart.com/terminology/chemistry/quadrupolar-axialization/"
}