{
  "annotation_id": "e9a83104-47cb-4e66-ba95-483148c1c139",
  "date_created": "2026-03-02T18:00:36.446000Z",
  "date_modified": "2026-03-02T18:00:36.446000Z",
  "file_hash": "abd969f12daeca995675bc30c8eaf04f5c7b45e95f6bcc90508621b9241fa8d5",
  "private": false,
  "record": {
    "abstract": "We investigate the production of long lived metastable (3P2, n=4) calcium\natoms in a magneto-optical trap operating on the 1S0 to 1P1 transition at 423\nnm. For excited 1P1-atoms a weak decay channel into the triplet states 3P2 and\n3P1 exists via the singlet 1D2 (n=3) state. The undesired 3P1-atoms decay back\nto the ground state within 0.4 ms and can be fully recaptured if the\nilluminated trap volume is sufficiently large. We obtain a flux of above 10^10\natoms/s into the 3P2-state. We find that our MOT life time of 23 ms is mainly\nlimited by this loss channel and thus the 3P2-production is not hampered by\ninelasic collisions. If we close the loss channel by repumping the 1D2-atoms\nwith a 671 nm laser back into the MOT cycling transition, a non-exponential 72\nms trap decay is observed indicating the presence of inelastic two-body\ncollisions between 1S0 and 1P1 atoms.",
    "arxiv_id": "physics/0107034",
    "authors": [
      "Jan Gruenert",
      "Andreas Hemmerich"
    ],
    "categories": [
      "physics.atom-ph"
    ],
    "doi": "10.1007/s003400100768",
    "title": "Optimizing the production of metastable calcium atoms in a   magneto-optical trap",
    "url": "https://arxiv.org/abs/physics/0107034"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "3c24d4cc-1389-4082-8956-c4db1448a3e2",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}