Initial energy state

{
  "id": "MLC-T-CHM-005861",
  "term": "Initial energy state",
  "field": "Chemistry",
  "definition": "The energy level of an atom, molecule, or ion before it undergoes a transition to another energy state, typically through absorption or emission of radiation. This state defines the starting point for spectroscopic transitions. In many spectroscopic experiments, the initial energy state is the ground state.",
  "subject": "Analytical Chemistry",
  "see_also": [
    "interatomic Auger process"
  ],
  "references": [
    "PAC, 2020, 92, 1781. 'Glossary of methods and terms used in surface chemical analysis (IUPAC Recommendations 2020)' on page 1826 (https://doi.org/10.1515/pac-2019-0404)"
  ],
  "url": "https://mlchart.com/terminology/chemistry/initial-energy-state/"
}