{
  "annotation_id": "78e8928f-37eb-4553-98c0-410e65b0e5da",
  "date_created": "2026-03-02T18:00:56.875000Z",
  "date_modified": "2026-03-02T18:00:56.875000Z",
  "file_hash": "ca33ddf5a6a6958b5d5b89c12b1d268eb1260739b4818cef4ccdd6c8d356d71e",
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  "record": {
    "abstract": "The picosecond dynamics of hydroxyl radicals generated in 200 nm photoinduced\ndissociation of aqueous hydrogen peroxide have been observed through their\ntransient absorbance at 266 nm. It is shown that these kinetics are nearly\nexponential, with a decay time of ca. 30 ps. The prompt quantum yield for the\ndecomposition of H2O2 is 0.56, and the fraction of hydroxyl radicals escaping\nfrom the solvent cage to the water bulk is 64-68%. These recombination kinetics\nsuggest strong caging of the geminate hydroxyl radicals by water.\nPhenomenologically, these kinetics may be rationalized in terms of the\ndiffusion of hydroxide radicals out of a shallow potential well (a solvent\ncage) with an Onsager radius of 0.24 nm.",
    "arxiv_id": "physics/0501098",
    "authors": [
      "R. A. Crowell",
      "R. Lian",
      "M. C. Sauer, Jr.",
      "D. A. Oulianov",
      "I. A. Shkrob"
    ],
    "categories": [
      "physics.chem-ph"
    ],
    "doi": "10.1016/j.cplett.2003.11.062",
    "journal_ref": "Chem. Phys. Lett. 383 (2004) 481",
    "title": "Geminate recombination of hydroxyl radicals generated in 200 nm   photodissociation of aqueous hydrogen peroxide",
    "url": "https://arxiv.org/abs/physics/0501098"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "edbdac52-7557-4223-9b6c-c3a4537cfd0e",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}