{
  "annotation_id": "774ef6c7-1d68-4956-b52a-25d64afb354a",
  "date_created": "2026-03-02T18:00:32.311000Z",
  "date_modified": "2026-03-02T18:00:32.311000Z",
  "file_hash": "b6490996e5ee1f279629cbf2f93d7ebc4b02576bbe24658af892f723de03e51e",
  "private": false,
  "record": {
    "abstract": "We report the observation of plasma oscillations in an ultracold neutral\nplasma. With this collective mode we probe the electron density distribution\nand study the expansion of the plasma as a function of time. For classical\nplasma conditions, i.e. weak Coulomb coupling, the expansion is dominated by\nthe pressure of the electron gas and is described by a hydrodynamic model.\nDiscrepancies between the model and observations at low temperature and high\ndensity may be due to strong coupling of the electrons.",
    "arxiv_id": "physics/0006027",
    "authors": [
      "S. Kulin",
      "T. C. Killian",
      "S. D. Bergeson",
      "S. L. Rolston"
    ],
    "categories": [
      "physics.plasm-ph",
      "physics.atom-ph"
    ],
    "doi": "10.1103/PhysRevLett.85.318",
    "title": "Plasma Oscillations and Expansion of an Ultracold Neutral Plasma",
    "url": "https://arxiv.org/abs/physics/0006027"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "0ad073be-0c48-413f-b0cf-ee9ca58498ed",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}