{
  "annotation_id": "e9b0a2ec-6316-4225-a3fe-6fa71a5e995a",
  "date_created": "2026-03-02T18:01:04.038000Z",
  "date_modified": "2026-03-02T18:01:04.038000Z",
  "file_hash": "6f557108d38ebd26f23db6b3e167f650296c6817a38bb69d249e22c825f37aba",
  "private": false,
  "record": {
    "abstract": "Full quantum dynamics calculations have been carried out for the ionic\nreaction 4He2+ + 3He and state-to-state reactive probabilities have been\nobtained using both a time-dependent (TD) and a time-independent (TI) approach.\nAn accurate ab-initio potential energy surface has been employed for the\npresent quantum dynamics and the two sets of results are shown to be in\nagreement with each other. The results for zero total angular momentum suggest\na marked presence of atom exchange (isotopic replacement) reaction with\nprobabilities as high as 60%. The reaction probabilities are only weakly\ndependent on the initial vibrational state of the reactants while they are\nslightly more sensitive to the degree of rotational excitation. A brief\ndiscussion of the results for selected higher total angular momentum values is\nalso presented, while the l-shifting approximation [1] has been used to provide\nestimates of the total reaction rates for the title process. Such rates are\nfound to be large enough to possibly become experimentally accessible.",
    "arxiv_id": "physics/0511190",
    "authors": [
      "Enrico Bodo",
      "Manuel Lara",
      "Franco A. Gianturco"
    ],
    "categories": [
      "physics.chem-ph",
      "physics.atm-clus"
    ],
    "doi": "10.1063/1.2155480",
    "title": "Isotopic replacement in ionic systems: the 4He2+ + 3He -\u003e 3He4He+ + 4He   reaction",
    "url": "https://arxiv.org/abs/physics/0511190"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "2f880056-5c0f-4f0c-868e-9f3bcb97ba24",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}