{
  "annotation_id": "0e6296a1-88cc-4a2b-93a6-9b228a328f10",
  "date_created": "2026-03-02T18:00:53.236000Z",
  "date_modified": "2026-03-02T18:00:53.236000Z",
  "file_hash": "b335721a2ae27c1ce75f5c8e3bf99a94661616ad3dbb456716675393d83c9ccd",
  "private": false,
  "record": {
    "abstract": "We report about a nuclear track imaging system which is designed to study in\ndetail the ionization topology of charged particle tracks in a low-pressure\ngas. The detection method is based on a time projection chamber (TPC) filled\nwith low-pressure triethylamine (TEA). Ionization electrons produced by\nenergetic charged particles are three-dimensionally imaged by recording light\nfrom electron avalanches with an intensified CCD system. The detector permits\nto inves-tigate the spatial ionization distributions of particle tracks in gas,\nof equivalent length and resolution in tissue of 4 mm and 40 nm (RMS),\nrespectively. We explain the relevance of this technique for dosimetry,\ndescribe the experimental method and the basic operation parameters. First\nresults of the chamber response to protons and alpha particles are presented.",
    "arxiv_id": "physics/0410258",
    "authors": [
      "U. Titt",
      "A. Breskin",
      "R. Chechik",
      "V. Dangendorf",
      "H. Schmidt-Boecking",
      "H. Schuhmacher"
    ],
    "categories": [
      "physics.ins-det"
    ],
    "title": "A time projection chamber with optical readout for charged particle   track structure imaging",
    "url": "https://arxiv.org/abs/physics/0410258"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "9fac82de-cd53-47de-b421-cab381964711",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}