Collision efficiency

{
  "id": "MLC-T-CHM-002223",
  "term": "Collision efficiency",
  "field": "Chemistry",
  "definition": "A measure, used for unimolecular and recombination reactions, of how effectively collisions with a given bath molecule remove energy from an excited species, relative to a reference molecule that deactivates it on every collision. The reference strong collider has a value of one, and real bath gases fall below it. The quantity is also called the de-energization efficiency and appears in fall-off treatments of pressure-dependent rate constants.",
  "synonyms": [
    "de-energization efficiency"
  ],
  "subject": "Physical and Biophysical Chemistry",
  "see_also": [
    "excited state",
    "order of reaction",
    "strong collision"
  ],
  "references": [
    "PAC, 1996, 68, 149. 'A glossary of terms used in chemical kinetics, including reaction dynamics (IUPAC Recommendations 1996)' on page 159 (https://doi.org/10.1351/pac199668010149)"
  ],
  "url": "https://mlchart.com/terminology/chemistry/collision-efficiency/"
}