{
  "annotation_id": "e7bff523-3797-4426-acd3-c0f5d569b090",
  "date_created": "2026-03-02T18:00:32.598000Z",
  "date_modified": "2026-03-02T18:00:32.598000Z",
  "file_hash": "18e5e4de3e705dded8606f1b4e9b9cbe6561c58f8ac91373d64ff743c29eddec",
  "private": false,
  "record": {
    "abstract": "The space charge limited emission of ions from a target in the focus of an\nintense relativistic electron beam is studied analytically for the case of a\nspatially varying target density profile. In particular, the emission in the\npresence of an under-dense plasma shelf in contact with the solid density\ntarget dramatically differs from the case of an abrupt solid-vacuum boundary.\nIt is found that an under-dense gradient scale length several times that of the\nbeam radius at the focus reduces the emission by at least an order of magnitude\nover that to be expected from a solid-vacuum boundary.",
    "arxiv_id": "physics/0010009",
    "authors": [
      "George J. Caporaso"
    ],
    "categories": [
      "physics.acc-ph"
    ],
    "journal_ref": "eConf C00082 (2000) TUc07",
    "title": "The Effect of an Under-Dense Plasma Density Gradient on the   Backstreaming Ion Mechanism",
    "url": "https://arxiv.org/abs/physics/0010009"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "fb416e70-866f-4e2e-aa23-252f75dd6ee3",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}