{
  "annotation_id": "3d0aa0e0-f670-4ac2-bbe2-67b56faa144c",
  "date_created": "2026-03-02T18:00:43.269000Z",
  "date_modified": "2026-03-02T18:00:43.269000Z",
  "file_hash": "5582546a8bc5ba2a34b0c55d2bccbda63ae87b8b1cdbcdd646691094d3dd6034",
  "private": false,
  "record": {
    "abstract": "Metastable calcium atoms, produced in a magneto-optic trap (MOT) operating\nwithin the singlet system, are continuously loaded into a magnetic trap formed\nby the magnetic quadrupole field of the MOT. At MOT temperatures of 3 mK and\n240 ms loading time we observe 1.1 x 10^8 magnetically trapped 3P2 atoms at\ndensities of 2.4 x 10^8 cm^-3 and temperatures of 0.61 mK. In a modified scheme\nwe first load a MOT for metastable atoms at a temperature of 0.18 mK and\nsubsequently release these atoms into the magnetic trap. In this case 240 ms of\nloading yields 2.4 x 10^8 trapped 3P2 atoms at a peak density of 8.7 x 10^10\ncm^-3 and a temperature of 0.13 mK. The temperature decrease observed in the\nmagnetic trap for both loading schemes can be explained only in part by trap\nsize effects.",
    "arxiv_id": "physics/0210119",
    "authors": [
      "Dirk P. Hansen",
      "Janis R. Mohr",
      "Andreas Hemmerich"
    ],
    "categories": [
      "physics.atom-ph",
      "physics.gen-ph"
    ],
    "doi": "10.1103/PhysRevA.67.021401",
    "title": "Magnetic Trapping of Metastable Calcium Atoms",
    "url": "https://arxiv.org/abs/physics/0210119"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "981f622b-20bc-478d-836b-ff7a0daa7a62",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}