Field-free region

{
  "id": "MLC-T-CHM-004414",
  "term": "Field-free region",
  "field": "Chemistry",
  "definition": "A section within a mass spectrometer where ions travel without being subjected to external electric or magnetic fields. In this region, ions maintain a constant velocity and direction, allowing for their separation based on mass-to-charge ratio. This area is present in time-of-flight mass spectrometers, for example, where ions drift before detection.",
  "subject": "Analytical Chemistry",
  "references": [
    "PAC, 2013, 85, 1515. 'Definitions of terms relating to mass spectrometry (IUPAC Recommendations 2013)' on page 1543 (https://doi.org/10.1351/PAC-REC-06-04-06)"
  ],
  "url": "https://mlchart.com/terminology/chemistry/field-free-region/"
}