{
  "annotation_id": "c0838388-4669-4fe8-9c21-04d600467fd6",
  "date_created": "2026-03-02T18:01:14.672000Z",
  "date_modified": "2026-03-02T18:01:14.672000Z",
  "file_hash": "a5d824473836e50a401e30657174bb4151a091b0bb40ac2098c60ff9ef26dca1",
  "private": false,
  "record": {
    "abstract": "The radium atom is a promising system for studying parity and time invariance\nviolating weak interactions. However, available experimental spectroscopic data\nfor radium is insufficient for designing an optimal experimental setup. We\ncalculate the energy levels and transition amplitudes for radium states of\nsignificant interest. Forty states corresponding to all possible configurations\nconsisting of the $7s$, $7p$ and $6d$ single-electron states as well as the\nstates of the $7s8s$, $7s8p$ and $7s7d$ configurations have been calculated.\nThe energies of ten of these states corresponding to the $6d^2$, $7s8s$,\n$7p^2$, and $6d7p$ configurations are not known from experiment. Calculations\nfor barium are used to control the accuracy.",
    "arxiv_id": "physics/0610119",
    "authors": [
      "V. A. Dzuba",
      "V. V. Flambaum"
    ],
    "categories": [
      "physics.atom-ph"
    ],
    "doi": "10.1088/0953-4075/40/1/021",
    "journal_ref": "J. Phys. B, 40, 227 (2007)",
    "title": "Calculation of energy levels and transition amplitudes for barium and   radium",
    "url": "https://arxiv.org/abs/physics/0610119"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "3b51c9a2-4dc9-4b35-af9a-afbb02dae762",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}