{
  "annotation_id": "258dcec3-7325-4f2a-ac7f-838f7dae1276",
  "date_created": "2026-03-02T18:00:22.255000Z",
  "date_modified": "2026-03-02T18:00:22.255000Z",
  "file_hash": "3825b2c06d49e14826febd667c751bf08f2e8085b19df215053bc61fee5f9411",
  "private": false,
  "record": {
    "abstract": "A detailed model for the calculation of beta decay rates of the $fp$ shell\nnuclei for situations prevailing in pre-supernova and collapse phases of\nevolution of the core of massive stars leading to supernova explosion has been\nextended for electron-capture rates. It can also be used to determine the\nhalf-lives of neutron-rich nuclei in the $fp/fpg$ shell. The model uses an\naveraged Gamow-Teller (GT) strength function. But it can also use the\nexperimental log ft values and GT strength function from $(n,p)$ reaction\nstudies wherever available. The calculated rate includes contributions from\neach of the low-lying excited states of the mother including some specific\nresonant states (\"back resonance\") having large GT matrix elements.",
    "arxiv_id": "nucl-th/9806082",
    "authors": [
      "K. Kar",
      "S. Chakravarti",
      "A. Ray",
      "S. Sarkar"
    ],
    "categories": [
      "nucl-th",
      "astro-ph"
    ],
    "doi": "10.1088/0954-3899/24/8/045",
    "journal_ref": "J.Phys.G24:1641-1645,1998",
    "title": "Half-lives and pre-supernova weak interaction rates for nuclei away from   the stability line",
    "url": "https://arxiv.org/abs/nucl-th/9806082"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "3b8db71d-15f7-401c-a1a0-fc5645cb1ec9",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}