Characteristic X-ray emission

{
  "id": "MLC-T-CHM-001888",
  "term": "Characteristic X-ray emission",
  "field": "Chemistry",
  "definition": "The emission of X-rays with discrete energies that are specific to the element from which they originate. This occurs when an inner-shell electron is ejected, and an outer-shell electron transitions to fill the vacancy, releasing energy as an X-ray photon. The energies of these emitted X-rays are used for elemental identification in techniques like X-ray fluorescence spectroscopy.",
  "synonyms": [
    "characteristic X-radiation"
  ],
  "subject": "Analytical Chemistry",
  "see_also": [
    "diagram level",
    "fluorescence",
    "ionization",
    "valence",
    "wavelength"
  ],
  "references": [
    "PAC, 1991, 63, 735. 'Nomenclature, symbols, units and their usage in spectrochemical analysis - VIII. Nomenclature system for X-ray spectroscopy (Recommendations 1991)' on page 737 (https://doi.org/10.1351/pac199163050735)"
  ],
  "url": "https://mlchart.com/terminology/chemistry/characteristic-x-ray-emission/"
}