{
  "annotation_id": "87e12cfa-1733-454c-94f2-3c673667294a",
  "date_created": "2026-03-02T18:00:42.673000Z",
  "date_modified": "2026-03-02T18:00:42.673000Z",
  "file_hash": "3c52e097f9f83eb7435701217c672fab41cbc1dcea557652b0bd420f91dd77ea",
  "private": false,
  "record": {
    "abstract": "Using high-resolution gamma-ray spectroscopy, the terrestrial gamma radiation\nin all the predominant types of geological rock formations appearing in Cyprus\nwas measured. Soil samples were collected from each rock type, sealed in\n1-litre plastic Marinelli beakers, and measured in the laboratory for 24 hours\neach. From the measured gamma-ray spectra, activity concentrations were\ndetermined for Th-232 (range from 1.3 to 52.8 Bq/kg), U-238 (from 0.9 to 90.3\nBq/kg) and K-40 (from 13 to 894 Bq/kg). Elemental concentrations mean values of\n(2.8 +- 0.7) ppm, (1.3 +- 0.3) ppm and (0.6 +- 0.1) % were extracted, for\nthorium, uranium and potassium, respectively. Absorbed dose rates in air\noutdoors were calculated to be in the range of 0.1-50 nGy/h, depending on the\ngeological features, with an overall mean value of (14.7 +- 7.3) nGy/h. The\ncorresponding effective dose rates per person outdoors were estimated to be\nbetween 0.1 and 61.4 microSv/y, assuming a 20% occupancy factor.",
    "arxiv_id": "physics/0212099",
    "authors": [
      "M. Tzortzis",
      "H. Tsertos",
      "S. Christofides",
      "G. Christodoulides"
    ],
    "categories": [
      "physics.med-ph",
      "nucl-ex",
      "physics.soc-ph"
    ],
    "journal_ref": "Radiat.Meas. 37 (2003) 221-229",
    "title": "Gamma-ray measurements of naturally occurring radioactive samples from   Cyprus characteristic geological rocks",
    "url": "https://arxiv.org/abs/physics/0212099"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "b4bc2ce2-1e16-433d-a820-b0d35f759bae",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}