{
  "annotation_id": "2a6526ac-6b8e-4d6c-a3a1-1e82ed2cac4d",
  "date_created": "2026-03-02T18:00:01.496000Z",
  "date_modified": "2026-03-02T18:00:01.496000Z",
  "file_hash": "ab1592dd185d8852c204cd5d4fec9e5c29ac9afa4e13cff747aa1c1980e91e78",
  "private": false,
  "record": {
    "abstract": "The structure of the $N \\approx Z$ nuclei $^{66}$Ge and $^{68}$Ge is studied\nby the shell model on a spherical basis. The calculations with an extended\n$P+QQ$ Hamiltonian in the configuration space\n  ($2p_{3/2}$, $1f_{5/2}$, $2p_{1/2}$, $1g_{9/2}$) succeed in reproducing\nexperimental energy levels, moments of inertia and $Q$ moments in Ge isotopes.\nUsing the reliable wave functions, this paper investigates particle alignments\nand nuclear shapes in $^{66}$Ge and $^{68}$Ge.\n  It is shown that structural changes in the four sequences of the positive-\nand negative-parity yrast states with even $J$ and odd $J$ are caused by\nvarious types of particle alignments in the $g_{9/2}$ orbit.\n  The nuclear shape is investigated by calculating spectroscopic $Q$ moments of\nthe first and second $2^+$ states, and moreover the triaxiality is examined by\nthe constrained Hatree-Fock method.\n  The changes of the first band crossing and the nuclear deformation depending\non the neutron number are discussed.",
    "arxiv_id": "nucl-th/0408063",
    "authors": [
      "M. Hasegawa",
      "K. Kaneko",
      "T. Mizusaki"
    ],
    "categories": [
      "nucl-th"
    ],
    "doi": "10.1103/PhysRevC.71.044301",
    "journal_ref": "Phys.Rev. C71 (2005) 044301",
    "title": "Particle alignments and shape change in $^{66}$Ge and $^{68}$Ge",
    "url": "https://arxiv.org/abs/nucl-th/0408063"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "b7059808-cc2c-422e-8906-b5dca2a033c5",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}