{
  "annotation_id": "25e2a7ba-1d05-4f8c-a885-a34f30e71477",
  "date_created": "2026-03-02T18:00:53.417000Z",
  "date_modified": "2026-03-02T18:00:53.417000Z",
  "file_hash": "88f76aa7a2dd0123620fff7135d0d73be9d3a6bf3e70c4c5aa99613b3f8c0223",
  "private": false,
  "record": {
    "abstract": "Beam premodulation on free electron laser (FEL) offers considerable\nenhancement in gain and efficiency when the phase of the premodulated beam is\n-pi/2 and the beam is highly modulated implying the maximum beam oscillatory\nvelocity due to wiggler. The growth rate of the FEL instability increases with\nthe modulation index and reaches maximum when the modulation index $\\Delta \\sim\n1.0$.",
    "arxiv_id": "physics/0410041",
    "authors": [
      "Vivek Beniwal",
      "Suresh C. Sharma",
      "Satoshi Hamaguchi"
    ],
    "categories": [
      "physics.plasm-ph"
    ],
    "title": "Gain and Efficiency Enhancement in Free Electron Laser by Means of   Modulated Electron Beam",
    "url": "https://arxiv.org/abs/physics/0410041"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "236d4b31-e082-4ab2-8d35-bcc319f79d69",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}