{
  "annotation_id": "2c081efe-35ba-4389-af25-5214c7c0ec12",
  "date_created": "2026-03-02T18:00:49.519000Z",
  "date_modified": "2026-03-02T18:00:49.519000Z",
  "file_hash": "d2236f80ff114893326db1460491a0b16bc8be57637d5658d338aeb58cd8d46b",
  "private": false,
  "record": {
    "abstract": "Drift velocity and longitudinal diffusion measurements are reported for a\nNegative Ion TPC (NITPC) operating with Helium + carbon disulfide gas mixtures\nat total pressures from 160 to 700 torr. Longitudinal diffusion at the\nthermal-limit was observed for drift fields up to at least 700 V/cm in all gas\nmixtures tested. The results are of particular interest in connection with\nmechanical simplification of Dark Matter searches such as DRIFT, and for high\nenergy physics experiments in which a low-Z, low density, gaseous tracking\ndetector with no appreciable Lorentz drift is needed for operation in very high\nmagnetic fields.",
    "arxiv_id": "physics/0406114",
    "authors": [
      "C. J. Martoff",
      "R. Ayad",
      "M. Katz-Hyman",
      "G. Bonvicini",
      "A. Schreiner"
    ],
    "categories": [
      "physics.ins-det"
    ],
    "doi": "10.1016/j.nima.2005.08.103",
    "journal_ref": "Nucl.Instrum.Meth. A555 (2005) 55-58",
    "title": "Negative Ion Drift and Diffusion in a TPC near 1 Bar",
    "url": "https://arxiv.org/abs/physics/0406114"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "261a4b37-8850-407f-ae57-17a3a1cbc41a",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}