Collision gas

{
  "id": "MLC-T-CHM-002225",
  "term": "Collision gas",
  "field": "Chemistry",
  "definition": "A neutral gas introduced into a collision cell or reaction chamber within a mass spectrometer. Its purpose is to collide with analyte ions, leading to energy transfer that can induce fragmentation or ion-molecule reactions. Common collision gases include helium, argon, and nitrogen, chosen for their inertness and collision properties.",
  "subject": "Analytical Chemistry",
  "see_also": [
    "buffer gas"
  ],
  "references": [
    "PAC, 2013, 85, 1515. 'Definitions of terms relating to mass spectrometry (IUPAC Recommendations 2013)' on page 1531 (https://doi.org/10.1351/PAC-REC-06-04-06)"
  ],
  "url": "https://mlchart.com/terminology/chemistry/collision-gas/"
}