Pre-ionization state

{
  "id": "MLC-T-CHM-009388",
  "term": "Pre-ionization state",
  "field": "Chemistry",
  "definition": "An excited electronic state of an atom or molecule that lies above the first ionization limit but is still discrete. This state can decay either by emission of a photon (radiative decay) or by autoionization, where an electron is ejected. Such states are observed in photoionization spectroscopy.",
  "subject": "Analytical Chemistry",
  "references": [
    "PAC, 2013, 85, 1515. 'Definitions of terms relating to mass spectrometry (IUPAC Recommendations 2013)' on page 1578 (https://doi.org/10.1351/PAC-REC-06-04-06)"
  ],
  "url": "https://mlchart.com/terminology/chemistry/pre-ionization-state/"
}