{
  "annotation_id": "c98f9cb7-72c6-42e0-b34e-e1a67d06698a",
  "date_created": "2026-03-02T18:00:50.267000Z",
  "date_modified": "2026-03-02T18:00:50.267000Z",
  "file_hash": "d166c924ad12f12c8232d08f8fafafdb83a26dcfb5a3b7f8a9a4263754b90967",
  "private": false,
  "record": {
    "abstract": "One of the main limitations of cesium atomic fountains has been the cold\ncollision frequency shift. By using a method based on a transfer of population\nby adiabatic passage allowing to prepare cold atomic samples with a well\ndefined ratio of atomic density as well as atom number the collisional shift is\ncontrolled at the 10E-3 of its value. A calibration of Zeeman sub-states\ncontribution to the clock shift as a function of the field has been performed.\nFeshbach resonances have been observed for the first time at very low magnetic\nfield and with a very good resolution. A Monte Carlo simulation has been\nperformed and could fit properly some of experimental data. This constrains\nsome parameters of the theory of collisions.",
    "arxiv_id": "physics/0407064",
    "authors": [
      "H. Marion",
      "S. Bize",
      "L. Cacciapuoti",
      "D. Chambon",
      "F. Pereira Dos Santos",
      "G. Santarelli",
      "P. Wolf",
      "A. Clairon",
      "A. Luiten",
      "M. Tobar",
      "S. Kokkelmans",
      "C. Salomon"
    ],
    "categories": [
      "physics.atom-ph",
      "cond-mat.other"
    ],
    "title": "First observation of feshbach resonances at very low magnetic field in a   133Cs fountain",
    "url": "https://arxiv.org/abs/physics/0407064"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "6d20899e-b73c-465a-a28d-e84429f39379",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}