{
  "annotation_id": "5b4287bc-9de9-41ff-a983-ad2d01ab9a97",
  "date_created": "2026-03-02T18:01:11.024000Z",
  "date_modified": "2026-03-02T18:01:11.024000Z",
  "file_hash": "a2fb19f3efe990bf166017cf242cd23e40b94f6df0120f9e8a49aef9af9f0ef3",
  "private": false,
  "record": {
    "abstract": "A radiator is typically a parabolic mirror illuminated by an electromagnetic\nsource, or a cylindrical transducer of resonant vibrations. Both of these\ndevices are designed to radiate either a beam of parallel rays or a (focused)\nbeam that converges to a point or a line. Consequently, at the worst, the\nradiation pattern is largely restricted to a {\\it half space}, and at the best,\nto a cone or cylinder-like subspace of this half space. Such devices can\ntherefore be termed unilateral radiators. This study is devoted to the\nsynthesis of the sources that can give rise to such radiation, the underlying\nmotivation being the removal of the material presence of the mirror or\ntransducer casing from which waves coming from other boundaries could reflect\nor diffract.",
    "arxiv_id": "physics/0606097",
    "authors": [
      "Armand Wirgin"
    ],
    "categories": [
      "physics.class-ph",
      "physics.optics"
    ],
    "title": "Synthesis of unilateral radiators",
    "url": "https://arxiv.org/abs/physics/0606097"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "b1376fea-8488-489e-9a29-444639a8ed23",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}