{
  "annotation_id": "beae77ee-7398-42a8-a5be-16dd415eeb8e",
  "date_created": "2026-03-02T18:00:17.932000Z",
  "date_modified": "2026-03-02T18:00:17.932000Z",
  "file_hash": "2d8081323406360ac88c3d6ddbbe432fa11ec7155778aa42067df055b2c59a92",
  "private": false,
  "record": {
    "abstract": "The mixed-symmetry collective modes are investigated in Cr-Fe nuclei, by\nanalyzing the realistic shell-model wavefunctions via the H^n-cooling method.\nIt is clarified that the relatively low-lying mixed-symmetry states behave like\ndoorway states. For these nearly spherical nuclei, the lowest mixed-symmetry\nstate is shown to have $J^P=2^+$. An indication of the mixed-symmetry 3^+ state\nis obtained. The sequence of the mixed-symmetry 2^+, 1^+ and 3^+ levels and its\nnucleus-dependence are discussed. Calculated M1 and M3 transitions in the\nlow-energy region suggest that the mixed-symmetry 1^+ and 3^+ components are\ndetectable. We investigate the B(M1) distribution in a wider energy range,\nwithout breaking the isospin quantum number. It is confirmed that the\nmixed-symmetry 1^+ component is well separated from the peak of the spin\nexcitation. The isospin-raising component has a peak, separated well from the\nisospin-conserving one. The orbital angular-momentum contributes destructively\nto the spin excitations.",
    "arxiv_id": "nucl-th/9703021",
    "authors": [
      "H. Nakada",
      "T. Otsuka"
    ],
    "categories": [
      "nucl-th"
    ],
    "doi": "10.1103/PhysRevC.55.2418",
    "journal_ref": "Phys.Rev.C55:2418-2426,1997",
    "title": "Microscopic analysis of quadrupole collective motion in Cr--Fe nuclei:   II. Doorway nature of mixed-symmetry states",
    "url": "https://arxiv.org/abs/nucl-th/9703021"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "629be18b-53a5-44b1-85eb-a472303d3778",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}