Accelerating voltage scan

{
  "id": "MLC-T-CHM-000092",
  "term": "Accelerating voltage scan",
  "field": "Chemistry",
  "definition": "A way of recording a mass spectrum on a magnetic-sector instrument in which the magnetic field is held fixed and the accelerating voltage applied to the ions is varied, so that ions of successive m/z values are brought into focus at the detector. When combined with a fixed electric sector, the same scan gives an ion kinetic energy spectrum. Because m/z is inversely proportional to the accelerating voltage at fixed field, lowering the voltage brings higher masses to the detector.",
  "synonyms": [
    "high voltage scan"
  ],
  "subject": "Physical and Biophysical Chemistry",
  "see_also": [
    "ion kinetic energy spectrum",
    "momentum"
  ],
  "references": [
    "PAC, 1991, 63, 1541. 'Recommendations for nomenclature and symbolism for mass spectroscopy (including an appendix of terms used in vacuum technology). (Recommendations 1991)' on page 1550 (https://doi.org/10.1351/pac199163101541)"
  ],
  "url": "https://mlchart.com/terminology/chemistry/accelerating-voltage-scan/"
}