{
  "annotation_id": "654ef34b-f3d7-44e4-ab88-9704735fb6a3",
  "date_created": "2026-03-02T18:01:04.427000Z",
  "date_modified": "2026-03-02T18:01:04.427000Z",
  "file_hash": "0c7496c9c536e262494d2f44a5d315f244201d98f8eb74a85fcf6c22aae46ea5",
  "private": false,
  "record": {
    "abstract": "We apply the convergent close-coupling (CCC) formalism to the problem of\ntwo-photon double ionization of helium. The electron-photon interaction is\ntreated perturbatively whereas the electron-electron interaction is included in\nfull. The integrated two-photon double ionization cross-section is\nsubstantially below non-perturbative literature results. However, the pattern\nof the angular correlation in the two-electron continuum is remarkably close to\nthe non-perturbative time-dependent close-coupling calculation of Hu {\\em et\nal} [J. Phys. {\\bf B38}, L35 (2005)]",
    "arxiv_id": "physics/0601137",
    "authors": [
      "A. S. Kheifets",
      "I. A. Ivanov"
    ],
    "categories": [
      "physics.atom-ph"
    ],
    "doi": "10.1088/0953-4075/39/7/015",
    "title": "Convergent close-coupling calculations of two-photon double ionization   of helium",
    "url": "https://arxiv.org/abs/physics/0601137"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "1fda9613-ae60-4de1-bf8a-37a474801fe7",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}