{
  "annotation_id": "541b5573-c7c3-4494-abb8-0b2a8bd7ca95",
  "date_created": "2026-03-02T18:00:39.670000Z",
  "date_modified": "2026-03-02T18:00:39.670000Z",
  "file_hash": "1a4eadd90dbc26996acb0de1c38ebe3e940bc8c5e60285464e557d6c1893ec54",
  "private": false,
  "record": {
    "abstract": "Theoretical model of the coherent control of nuclear spin isomers by\nmicrowave radiation has been developed. Model accounts the M-degeneracy of\nmolecular states and molecular center-of-mass motion. The model has been\napplied to the 13CH3F molecules. Microwave radiation excites the para state\n(J=11,K=1) which is mixed by the nuclear spin-spin interaction with the ortho\nstate (9,3). Dependencies of the isomer enrichment and conversion rates on the\nradiation frequency have been calculated. Both spectra consist of two\nresonances situated at the centers of allowed and forbidden (by nuclear spin)\ntransitions in the molecule. Larger enrichment, up to 7%, can be produced by\nstrong radiation resonant to the forbidden transition. The spin conversion rate\ncan be increased by 2 orders of magnitude at this resonance.",
    "arxiv_id": "physics/0208099",
    "authors": [
      "O. I. Permyakova",
      "E. Ilisca",
      "P. L. Chapovsky"
    ],
    "categories": [
      "physics.chem-ph"
    ],
    "doi": "10.1103/PhysRevA.67.033406",
    "title": "Enrichment of CH3F nuclear spin isomers by resonant microwave radiation",
    "url": "https://arxiv.org/abs/physics/0208099"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "74a83577-f858-4864-aef8-296d4999833a",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}