Doppler broadening

{
  "id": "MLC-T-CHM-003388",
  "term": "Doppler broadening",
  "field": "Chemistry",
  "definition": "The widening of spectral lines caused by the random thermal motion of atoms or molecules emitting or absorbing radiation. Particles moving towards or away from the observer experience a shift in the observed frequency due to the Doppler effect, leading to a distribution of frequencies. This effect is more pronounced at higher temperatures, as atomic velocities increase.",
  "subject": "Analytical Chemistry",
  "references": [
    "PAC, 1985, 57, 1453. 'Nomenclature, symbols, units and their usage in spectrochemical analysis - V: Radiation sources (Recommendations 1985)' on page 1463 (https://doi.org/10.1351/pac198557101453)"
  ],
  "url": "https://mlchart.com/terminology/chemistry/doppler-broadening/"
}