{
  "annotation_id": "3b4cef98-6bd0-401f-abc4-ca8e0a6eaace",
  "date_created": "2026-03-02T18:00:39.051000Z",
  "date_modified": "2026-03-02T18:00:39.051000Z",
  "file_hash": "c230c550e371fca82b8f5dc513cd949b211fcc79e2cd78f578aee5f2e712928e",
  "private": false,
  "record": {
    "abstract": "Double photoionization by a single photon is often discussed in terms of two\ncontributing mechanisms, {\\it knock-out} (two-step-one) and {\\it shake-off}\nwith the latter being a pure quantum effect. It is shown that a quasi-classical\ndescription of knock-out and a simple quantum calculation of shake-off provides\na clear separation of the mechanisms and facilitates their calculation\nconsiderably. The relevance of each mechanism at different photon energies is\nquantified for helium. Photoionization ratios, integral and singly differential\ncross sections obtained by us are in excellent agreement with benchmark\nexperimental data and recent theoretical results.",
    "arxiv_id": "physics/0205017",
    "authors": [
      "Tobias Schneider",
      "Peter Leszek Chocian",
      "Jan-Michael Rost"
    ],
    "categories": [
      "physics.atom-ph",
      "physics.class-ph"
    ],
    "doi": "10.1103/PhysRevLett.89.073002",
    "journal_ref": "Phys. Rev. Lett. 89, 073002 (2002)",
    "title": "Separation and identification of dominant mechanisms in double   photoionization",
    "url": "https://arxiv.org/abs/physics/0205017"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "2cfb1294-5efd-4458-bb2d-9beb46182339",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}