Unimolecular dissociation

{
  "id": "MLC-T-CHM-012435",
  "term": "Unimolecular dissociation",
  "field": "Chemistry",
  "definition": "A fragmentation reaction of an ion with molecularity one, in which the ion breaks into a smaller ion and a neutral fragment once its internal energy exceeds the activation energy for dissociation. The energy comes either from excess energy of a metastable ion formed in the ion source or from collisional excitation of a stable ion, as in collision-induced dissociation. The product ion spectrum gives structural information about the precursor ion.",
  "subject": "Analytical Chemistry",
  "references": [
    "PAC, 2013, 85, 1515. 'Definitions of terms relating to mass spectrometry (IUPAC Recommendations 2013)' on page 1598 (https://doi.org/10.1351/PAC-REC-06-04-06)"
  ],
  "url": "https://mlchart.com/terminology/chemistry/unimolecular-dissociation/"
}