{
  "annotation_id": "2954f991-48f0-4a87-aa26-f5e54acf7f00",
  "date_created": "2026-03-02T18:00:04.754000Z",
  "date_modified": "2026-03-02T18:00:04.754000Z",
  "file_hash": "a8dae6fb86ae8b63684a04c8c6f21ec4f57d28b3f62626add4cce06aa182ef5b",
  "private": false,
  "record": {
    "abstract": "The double neutron/proton ratio of nucleon emissions taken from two reaction\nsystems using four isotopes of the same element, namely, the neutron/proton\nratio in the neutron-rich system over that in the more symmetric system, has\nthe advantage of reducing systematically the influence of the Coulomb force and\nthe normally poor efficiencies of detecting low energy neutrons. The double\nratio thus suffers less systematic errors. Within the IBUU04 transport model\nthe double neutron/proton ratio is shown to have about the same sensitivity to\nthe density dependence of nuclear symmetry energy as the single neutron/proton\nratio in the neutron-rich system involved. The double neutron/proton ratio is\ntherefore more useful for further constraining the symmetry energy of\nneutron-rich matter.",
    "arxiv_id": "nucl-th/0510016",
    "authors": [
      "Bao-An Li",
      "Lie-Wen Chen",
      "Gao-Chan Yong",
      "Wei Zuo"
    ],
    "categories": [
      "nucl-th",
      "nucl-ex"
    ],
    "doi": "10.1016/j.physletb.2006.02.003",
    "journal_ref": "Phys.Lett. B634 (2006) 378-382",
    "title": "Double neutron/proton ratio of nucleon emissions in isotopic reaction   systems as a robust probe of nuclear symmetry energy",
    "url": "https://arxiv.org/abs/nucl-th/0510016"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "dccaab09-71bc-47ea-b76b-15137f6338bf",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}