Normal X-ray level

{
  "id": "MLC-T-CHM-008076",
  "term": "Normal X-ray level",
  "field": "Chemistry",
  "definition": "An energy level of an atom from which an electron can be ejected by X-ray absorption, leading to the emission of characteristic X-rays or Auger electrons. These levels correspond to the principal quantum shells (K, L, M, etc.) of the atom. The energy of an X-ray photon emitted during a transition between two normal X-ray levels is characteristic of the element.",
  "subject": "Analytical Chemistry",
  "see_also": [
    "diagram level"
  ],
  "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 738 (https://doi.org/10.1351/pac199163050735)"
  ],
  "url": "https://mlchart.com/terminology/chemistry/normal-x-ray-level/"
}