Initial-state Auger parameter

{
  "id": "MLC-T-CHM-005868",
  "term": "Initial-state Auger parameter",
  "field": "Chemistry",
  "definition": "A parameter in photoelectron and Auger spectroscopy defined as β = 3E_B + E_K, where E_B is the binding energy of a photoelectron line and E_K the Fermi-level-referenced kinetic energy of an Auger line, both arising from the same element and the same starting core level. It differs from the modified Auger parameter, the plain sum E_B + E_K, and is built so that final-state relaxation cancels, leaving a shift that reflects the initial-state potential.",
  "subject": "Analytical Chemistry",
  "see_also": [
    "Auger parameter",
    "Fermi level referencing",
    "asymmetry parameter",
    "modified Auger parameter"
  ],
  "references": [
    "PAC, 2020, 92, 1781. 'Glossary of methods and terms used in surface chemical analysis (IUPAC Recommendations 2020)' on page 1827 (https://doi.org/10.1515/pac-2019-0404)"
  ],
  "url": "https://mlchart.com/terminology/chemistry/initial-state-auger-parameter/"
}