{
  "annotation_id": "c0fe485b-cba4-4a79-90f4-4b2e79378bb2",
  "date_created": "2026-03-02T18:01:18.546000Z",
  "date_modified": "2026-03-02T18:01:18.546000Z",
  "file_hash": "984033bd071e031492556b5de57399c5754173ed2dc044e8e4cd9e5b9865fe0a",
  "private": false,
  "record": {
    "abstract": "A Feshbach resonance associated with the 1s3s4s ^{4}S state of He^{-} has\nbeen observed in the He(1s2s ^{3}S) + e^- (\\epsilon s) partial photodetachment\ncross section. The residual He(1s2s ^{3}S) atoms were resonantly ionized and\nthe resulting He^+ ions were detected in the presence of a small background. A\ncollinear laser-ion beam apparatus was used to attain both high resolution and\nsensitivity. We measured a resonance energy E_r = 2.959 255(7) eV and a width\n\\Gamma = 0.19(3) meV, in agreement with a recent calculation.",
    "arxiv_id": "physics/9703011",
    "authors": [
      "Andreas E. Klinkmueller",
      "Gunnar Haeffler",
      "Dag Hanstorp",
      "Igor Yu. Kiyan",
      "Uldis Berzinsh",
      "Christopher W. Ingram",
      "David J. Pegg",
      "James R. Peterson"
    ],
    "categories": [
      "physics.atom-ph"
    ],
    "doi": "10.1103/PhysRevA.56.2788",
    "journal_ref": "Phys. Rev. A, 56(4), 2788-2791, (1997)",
    "title": "Photodetachment study of the 1s3s4s ^4S resonance in He^-",
    "url": "https://arxiv.org/abs/physics/9703011"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "2d818ae2-6236-480a-a4ef-49f9f0dd172f",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}