{
  "annotation_id": "5a4d0547-c68a-41bd-990b-a10f627986c3",
  "date_created": "2026-03-02T18:00:53.449000Z",
  "date_modified": "2026-03-02T18:00:53.449000Z",
  "file_hash": "8a0aab18073d4a7da008fa6f0c2e618950e12528f4c9d47b6d986365ee1d58d1",
  "private": false,
  "record": {
    "abstract": "The FN-II is a small dense plasma focus (4.8 kJ at 36 kV), operated at the\nUniversidad Nacional Autonoma de Mexico. Substantial effort has been dedicated\nto the study of the anisotropy in the neutron and hard X-ray radiation.\nConcerning the former, it has been observed that there is an anisotropic\ndistribution superposed on a far larger isotropic one. These clearly separated\neffects can be interpreted as the consequence of two different neutron emission\nmechanisms. The angular distribution of hard X-rays and ions is also studied\nwithin the chamber with TLD and CR-39 detectors respectively. Two maxima are\nfound around the axis of the device for X rays within the 20-200 keV range.",
    "arxiv_id": "physics/0410235",
    "authors": [
      "J. Julio E. Herrera Velazquez",
      "Fermin Castillo",
      "Isabel Gamboa",
      "Guillermo Espinosa",
      "Jose Ignacio Golzarri",
      "Jose Rangel"
    ],
    "categories": [
      "physics.plasm-ph"
    ],
    "title": "Review of Results from the FN-II Dense Plasma Focus Machine",
    "url": "https://arxiv.org/abs/physics/0410235"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "c8e96322-b758-44a3-829a-0c151d54201c",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}