{
  "annotation_id": "20bd37ea-f405-4a94-a1d1-cf8281eece8f",
  "date_created": "2026-03-02T18:00:10.939000Z",
  "date_modified": "2026-03-02T18:00:10.939000Z",
  "file_hash": "74973094308d2f716b185b979bbcb7fefbe97aa7005d2709ce4bff88570439fc",
  "private": false,
  "record": {
    "abstract": "The long-standing problem of dramatic structure change near N=40 in Ge\nisotopes is investigated by means of large-scale shell model calculation. The\nanalysis of simulated calculations suggests a possible understanding of the\nproblem in terms of rapid increase in the $g_{9/2}$ proton and neutron\noccupation. The observed variation in excitation of the second $0^+$ state in\n$^{70,72,74}$Ge appears to correlate closely with the $g_{9/2}$ occupations\ninduced by strong proton-neutron interactions. The enhancement of the $g_{9/2}$\noccupancies is probably due to correlations in the $1g2d3s$ shell.",
    "arxiv_id": "nucl-th/0702071",
    "authors": [
      "M. Hasegawa",
      "T. Mizusaki",
      "K. Kaneko",
      "Y. Sun"
    ],
    "categories": [
      "nucl-th"
    ],
    "doi": "10.1016/j.nuclphysa.2007.02.012",
    "journal_ref": "Nucl.Phys.A789:46-54,2007",
    "title": "Enhancement of $B(E2)$ and low excitation of the second 0$^+$ state near   N=40 in Ge isotopes",
    "url": "https://arxiv.org/abs/nucl-th/0702071"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "68b8e129-ee99-4369-a525-73c950f08e64",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}