Landau-Zener model

{
  "id": "MLC-T-CHM-006434",
  "term": "Landau-Zener model",
  "field": "Chemistry",
  "definition": "A theoretical model describing the probability of a non-adiabatic transition between two electronic states as a system passes through a region where their potential energy surfaces approach each other. It quantifies the likelihood of a molecule switching from one electronic state to another during a collision or chemical reaction. The model is applicable when the energy surfaces cross or exhibit an avoided crossing.",
  "subject": "Organic and Biomolecular Chemistry",
  "see_also": [
    "electronic state",
    "probability",
    "surface crossing"
  ],
  "references": [
    "PAC, 2007, 79, 293. 'Glossary of terms used in photochemistry, 3rd edition (IUPAC Recommendations 2006)' on page 362 (https://doi.org/10.1351/pac200779030293)"
  ],
  "url": "https://mlchart.com/terminology/chemistry/landau-zener-model/"
}