{
  "annotation_id": "2e23857a-ee5d-499c-afa1-0ecdee818941",
  "date_created": "2026-03-02T18:00:56.434000Z",
  "date_modified": "2026-03-02T18:00:56.434000Z",
  "file_hash": "ae874017e9b69cb3648c22e58bcbd147a1cbd0dbc0cf65caf24b6f9d8aaa1183",
  "private": false,
  "record": {
    "abstract": "Collisional and thermal ionization of sodium nS and nD Rydberg atoms with\nn=8-20 has been studied. The experiments were performed using a two-step pulsed\nlaser excitation in an effusive atomic beam at atom density of about 2 10^{10}\ncm^{-3}. Molecular and atomic ions from associative, Penning, and thermal\nionization processes were detected. It has been found that the atomic ions were\ncreated mainly due to photoionization of Rydberg atoms by photons of blackbody\nradiation at the ambient temperature of 300K. Blackbody ionization rates and\neffective lifetimes of Rydberg states of interest were determined. The\nmolecular ions were found to be from associative ionization in Na(nL)+Na(3S)\ncollisions. Rate constants of associative ionization have been measured using\nan original method based on relative measurements of Na_{2}^{+} and Na^{+} ion\nsignals.",
    "arxiv_id": "physics/0501088",
    "authors": [
      "I. I. Ryabtsev",
      "D. B. Tretyakov",
      "I. I. Beterov",
      "N. N. Bezuglov",
      "K. Miculis",
      "A. Ekers"
    ],
    "categories": [
      "physics.atom-ph",
      "physics.chem-ph"
    ],
    "doi": "10.1088/0953-4075/38/2/002",
    "journal_ref": "J. Phys. B: At. Mol. Opt. Phys. 38 (2005) S17-S35",
    "title": "Collisional and thermal ionization of sodium Rydberg atoms I. Experiment   for nS and nD atoms with n=8-20",
    "url": "https://arxiv.org/abs/physics/0501088"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "50502f02-479b-41e1-b6c3-a00f93026b68",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}