{
  "annotation_id": "64a3b691-e271-4f34-88ad-29c758990ed1",
  "date_created": "2026-03-02T18:01:14.202000Z",
  "date_modified": "2026-03-02T18:01:14.202000Z",
  "file_hash": "2b9efa28db68c8314c8e6e9b48accb04836a79e1ef117d634e14b2302ae20f42",
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  "record": {
    "abstract": "The existence of a second bound state of PsH that is electronically stable\nand also stable against positron annihilation by the normal 2gamma and 3gamma\nprocesses is demonstrated by explicit calculation. The state can be found in\nthe 2,4So symmetries with the two electrons in a spin triplet state. The\nbinding energy against dissociation into the H(2p) + Ps(2p) channel was\n6.06x10-4 Hartree. The dominant decay mode of the states will be radiative\ndecay into a configuration that autoionizes or undergoes positron annihilation.\nThe NaPs system of the same symmetry is also electronically stable with a\nbinding energy of 1.553x10-3 Hartree with respect to the Na(3p) + Ps(2p)\nchannel.",
    "arxiv_id": "physics/0611181",
    "authors": [
      "J. Mitroy",
      "M. W. J. Bromley"
    ],
    "categories": [
      "physics.atom-ph",
      "physics.chem-ph"
    ],
    "doi": "10.1103/PhysRevLett.98.063401",
    "journal_ref": "Phys.Rev.Lett. 98 (2007) 063401",
    "title": "Second bound state of PsH",
    "url": "https://arxiv.org/abs/physics/0611181"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "91fa0f4e-ba21-48a4-83fb-746e97456bfc",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}