{
  "annotation_id": "92294026-55d0-46d7-8402-e5bca3e3faf2",
  "date_created": "2026-03-02T18:01:04.358000Z",
  "date_modified": "2026-03-02T18:01:04.358000Z",
  "file_hash": "2e7937a1ec5ba4ffad8a2de22a76dfb6018306e1376b050b7e8e7fffaed19b0b",
  "private": false,
  "record": {
    "abstract": "We have theoretically investigated the focusing of a launched cloud of cold\natoms. Time-dependent spatially-varying magnetic fields are used to impart\nimpulses leading to a three-dimensional focus of the launched cloud. We discuss\npossible coil arrangements for a new focusing regime: isotropic 3D focusing of\natoms with a single-impulse magnetic lens. We investigate focusing aberrations\nand find that, for typical experimental parameters, the widely used assumption\nof a purely harmonic lens is often inaccurate. The baseball lens offers the\nbest possibility for isotropically focusing a cloud of weak-field-seeking atoms\nin 3D.",
    "arxiv_id": "physics/0512141",
    "authors": [
      "Matthew J Pritchard",
      "Aidan S Arnold",
      "David A Smith",
      "Ifan G Hughes"
    ],
    "categories": [
      "physics.atom-ph",
      "physics.optics"
    ],
    "doi": "10.1088/0953-4075/37/22/004",
    "journal_ref": "J. Phys. B, 37 4435 (2004)",
    "title": "Single-impulse magnetic focusing of launched cold atoms",
    "url": "https://arxiv.org/abs/physics/0512141"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "29b10ac9-6dff-4238-b872-c308fa0f6f72",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}